ˌcastor ˈoil noun [uncountable][
Date: 1700-1800;
Origin: Probably from castor 'substance obtained from part of a beaver's body, used in medicines and perfumes' (16-19 centuries), from castor 'beaver' (14-19 centuries), from Latin, from Greek kastor; because castor oil was once used instead of castor in medicines]
a thick oil made from the seeds of a plant and used in the past as a medicine to make the
bowels empty
[TahlilGaran] Dictionary of Contemporary English ▲