any of a group of oily, organic liquids occurring naturally, as linseed, soybean, or dehydrated castor oil, or synthesized, that when applied as a thin coating absorb atmospheric oxygen, forming a tough, elastic layer.
Origin of drying oil
First recorded in 1860–65
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
one of a number of animal or vegetable oils, such as linseed oil, that harden by oxidation on exposure to air: used as a base for some paints and varnishes
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