cola nut 【医】 柯拉子
cola nut[ noun ]
bitter brown seed containing caffein; source of cola extract
<noun.plant>
Cola nut \Cola nut\, Cola seed \Cola seed\ . (Bot.)
The bitter fruit of {Cola acuminata}, which is nearly as
large as a chestnut, and furnishes a stimulant, which is used
in medicine.
[Webster 1913 Suppl.]