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.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use sperm oil in a sentence
sperm oil is the best known of all the lubricants and is, for general purposes, one of the most excellent.Friction, Lubrication and the Lubricants in Horology | William T. Lewis
sperm oil is the purest and best of all varieties of whale oil, and brings the highest price in the market.The Arctic Whaleman | Lewis Holmes
British Dictionary definitions for sperm oil
an oil obtained from the head of the sperm whale, used as a lubricant
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012