also: びなんし
Refers to a man with strikingly good looks; often used in a somewhat formal or literary context.
He is the most handsome man in the class.
That actor is famous as a handsome man.
美男子 is a literary or formal term for a handsome man, whereas ハンサム is the everyday loanword equivalent.
美男子 specifically means a handsome man, whereas 美形 works for either gender depending on context.
Standard kanji spelling; the reading びだんし is the most common.
Alternate reading; less common than びだんし.
Compound of 美 (beauty) + 男子 (man, male). The reading びだんし is a regular on'yomi combination; びなんし is an alternative reading possibly influenced by 美男 (びなん).