Noun
glass (drinking vessel); tumbler
Usually written using kana alone
ガラスのコップを流しにおこうとしたら手が滑って、ガシャッと割れた。When I tried to set the glass down in the sink my hand slipped and it shattered to pieces. cups (suit)
Card gamesUsually written using kana alonealso written as コツフ
Also written 洋盃【コップ】、骨杯【コップ】