Phrase guide

rock oil

noun · 3 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

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No pronunciation record was provided for this word.

1

noun

Meaning 1

Naphtha (liquid petroleum).

Definition source: English Wiktionary via Wiktextract

Usage: countable, dated, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

Petroleum

Definition source: English Wiktionary via Wiktextract

Usage: countable, obsolete, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

a dark oil consisting mainly of hydrocarbons

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: petroleum, crude oil, crude, fossil oil, oil

Antonyms: none provided

Broader terms: fossil fuel, oil

Narrower terms: residual oil, resid

History

Etymology

From rock + oil, a literal rendering of Latin petroleum (literally “rock oil”).