Standard Lemma guide

tach

noun · 4 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.

  • /tæk/
  • Southern-England: Recorded audio is listed in the source snapshot.
  • rhymes with -æk
  • /tæt͡ʃ/
  • Southern-England: Recorded audio is listed in the source snapshot.
  • rhymes with -ætʃ

1

noun

Meaning 1

Clipping of tachometer.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, clipping, informal

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

A hat.

Definition source: English Wiktionary via Wiktextract

Usage: obsolete

Qualifier: costermongers

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

Tachycardia.

Definition source: English Wiktionary via Wiktextract

Usage: colloquial, uncountable

Topics: medicine, sciences

Examples

  • wide-complex tach
  • V-tach

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

noun

Meaning 4

measuring instrument for indicating speed of rotation

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: tachometer

Antonyms: none provided

Broader terms: measuring instrument, measuring system, measuring device

Narrower terms: tachograph

History

Etymology

Clipping of tachometer.

Backslang for hat (with /tʃ/ substituted for the /h/).