noun
handsome man; sexy man; lady-killer
Refers to a man who is physically attractive and often charming, with a nuance of being a womanizer or playboy.
彼はクラスで一番の色男だ。
He is the most handsome guy in the class.
あの色男に気をつけて。
Be careful of that lady-killer.
noun
male lover
Dated term for a male lover or paramour, often implying a secret or extramarital relationship.
See also: 色
彼女には年上の色男がいるらしい。
She seems to have an older lover.