Oil ::
Oil (n.) Any one of a great
variety of
unctuous combustible substances, not
miscible with
water; as, olive oil, whale oil, rock oil, etc. They are of
animal, vegetable, or
mineral origin and of
varied composition, and they are
variously used for food, for
solvents, for
anointing, lubrication, illumination, etc. By
extension, any
substance of an oily
consistency; as, oil of
vitriol..