English · Slang Candidate

green oil

Proposed by a contributor, not yet supported by evidence.

Meaning · English

Petroleum.

Where it’s used: Used American English

Sources & notes

Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).

Topics: Colors

Common questions

What does “green oil” mean?

Petroleum.

Is “green oil” formal or informal?

green oil is generally slang.

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