noun
lean and toned man; wiry but muscular build
Colloquial term for a slim man who has visible, well-defined muscles; often used in fashion and fitness contexts.
最近、細マッチョがモテるらしい。
Lately, lean and toned guys seem to be popular.
彼は細マッチョで、スーツがよく似合う。
He has a lean, muscular build and looks great in a suit.