• (n.) A characteristic crystalline substance, obtained from oil of bitter almonds.
Am'a·rine noun [ Latin amarus bitter.] (Chemistry) A characteristic crystalline substance, obtained from oil of bitter almonds. 
Type: Term Pronunciation: am′ă-rin Definitions: 1. A name applied to various bitter principles derived from plants, especially to a poisonous substance, 2,4,5-triphenylimidazoline, obtained from oil of bitter almond.