single-breasted
adjective [ before noun ] uk/ˌsɪŋ.ɡəlzˈbres.tɪd/ us/ˌsɪŋ.ɡəlzˈbres.tɪd/
（夹克或外套）单排扣的
A single-breasted jacket or coat fastens in the centre, with only one row of buttons.
a single-breasted coat/jacket/suit 单排扣外套／夹克／套装
Compare: double-breasted