sperm oil

  1. a yellow, thin, water-insoluble liquid obtained from the sperm whale, used chiefly as a lubricant in light machinery, as watches, clocks, and scientific apparatus.

Origin of sperm oil

First recorded in 1820–30

Words Nearby sperm oil

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use sperm oil in a sentence

British Dictionary definitions for sperm oil

sperm oil

  1. an oil obtained from the head of the sperm whale, used as a lubricant

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