noun
single-breasted suit
Abbreviation of シングルブレステッド. Refers to a suit jacket with a single column of buttons and narrow overlap.
彼は紺のシングルブレストを着ていた。
He was wearing a navy single-breasted suit.
Variant with interpunct; less common but sometimes seen.
Refers to a double-breasted suit, which has two parallel columns of buttons and a wider overlap.
From English 'single-breasted', abbreviated to シングルブレスト.