Standard Lemma guide

CO

name · noun · pron · verb · 21 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • Received-Pronunciation:
  • Received-Pronunciation: /kəʊ/
  • General-American:
  • General-American: /koʊ/
  • Southern-England: Recorded audio is listed in the source snapshot.
  • rhymes with -əʊ
  • CMU ARPABET: K OW1 Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

name

Meaning 1

Abbreviation of Colorado: a state of the United States.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

Abbreviation of county.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

Initialism of commanding officer.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, initialism

Topics: government, military, politics, war

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

noun

Meaning 4

Initialism of commissioned officer.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, initialism

Topics: government, military, politics, war

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

5

noun

Meaning 5

Initialism of corrections officer.

Definition source: English Wiktionary via Wiktextract

Usage: US, abbreviation, alt-of, initialism

Topics: government, law-enforcement

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

6

noun

Meaning 6

Initialism of correctional officer.

Definition source: English Wiktionary via Wiktextract

Usage: US, abbreviation, alt-of, initialism

Topics: government, law-enforcement

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

7

noun

Meaning 7

Initialism of conscientious objector.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, initialism

Topics: government, military, politics, war

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

8

noun

Meaning 8

Initialism of clothing optional.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, initialism

Topics: lifestyle, naturism

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

9

noun

Meaning 9

Initialism of common-offset method.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, initialism

Topics: geography, geology, natural-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

10

noun

Meaning 10

Abbreviation of cutoff.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of

Topics: card-games, poker

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

11

noun

Meaning 11

Clipping of company.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, clipping, colloquial

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

12

noun

Meaning 12

Abbreviation of company, alternative form of Co..

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

13

noun

Meaning 13

Abbreviation of county, alternative form of Co..

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

14

noun

Meaning 14

Abbreviation of cotton.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

15

pron

Meaning 15

Gender-neutral subject pronoun, coordinate with gendered pronouns he and she.

Definition source: English Wiktionary via Wiktextract

Usage: gender-neutral, nonstandard, singular, third-person

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

16

pron

Meaning 16

Gender-neutral object pronoun, coordinate with gendered pronouns him and her.

Definition source: English Wiktionary via Wiktextract

Usage: gender-neutral, nonstandard, singular, third-person

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

17

verb

Meaning 17

Abbreviation of cast on.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of

Topics: business, knitting, manufacturing, textiles

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

18

noun

Meaning 18

a state in west central United States in the Rocky Mountains

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: Colorado, Centennial State

Antonyms: none provided

Broader terms: American state

19

noun

Meaning 19

one who refuses to serve in the armed forces on grounds of conscience

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: conscientious objector

Antonyms: none provided

Broader terms: dissenter, dissident, protester, objector, contestant

20

noun

Meaning 20

a hard ferromagnetic silver-white bivalent or trivalent metallic element; a trace element in plant and animal nutrition

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: cobalt, atomic number 27

Antonyms: none provided

Broader terms: metallic element, metal

Narrower terms: cobalt 60

21

noun

Meaning 21

an odorless very poisonous gas that is a product of incomplete combustion of carbon

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: carbon monoxide, carbon monoxide gas

Antonyms: none provided

Broader terms: monoxide

History

Etymology

Clipping of company.

Coined by feminist writer Mary Orovan in 1970; in common usage in intentional communities of the Federation of Egalitarian Communities.