noun
A drinking vessel, typically made of glass, used for water, juice, etc. Not a delicate teacup (that is カップ).
from Portuguese copo · from Dutch kop
冷たい水をコップに注いだ。
I poured cold water into a glass.
テーブルの上にコップが三つある。
There are three glasses on the table.
noun
cups (suit in cards)
The suit of cups in Western playing cards. Also written as コツフ in some contexts.
トランプでコップのエースを引いた。
I drew the ace of cups in cards.