noun
Western-style clothes; Western clothing
Refers to Western-style clothing as opposed to traditional Japanese clothing (和服). Commonly used in everyday contexts for suits, dresses, casual wear, etc.
明日のパーティーには洋服を着ていくつもりです。
I plan to wear Western-style clothes to tomorrow's party.
彼はいつもきちんとした洋服を着ている。
He always wears neat Western-style clothes.