n. A white, fatty, crystalline substance found in animal and plant products and tissue, especially in nerve tissue, bile, and gallstones.
the GNU version of the Collaborative International Dictionary of English
n. A white, fatty, crystalline substance, tasteless and odorless, found in animal and plant products and tissue, and especially in nerve tissue, in the bile, and in gallstones.
The Century Dictionary and Cyclopedia
n. A substance (C26H44O) crystallizing in leaflets, with a mother-of-pearl luster and a fatty feel.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. an animal sterol that is normally synthesized by the liver; the most abundant steroid in animal tissues
Word Usage
"It is a yellowish substance composed of water, fats, fatty acids, lecithin, and cholesterin."