Male, masculine, virile are adjectives that describe men and boys or attributes and conduct culturally ascribed to them. Male, which is applied to plants and animals as well as to human beings, is a biological or physiological descriptor, classifying individuals on the basis of their potential or actual ability to inseminate in bisexual reproduction. It contrasts with female in all such uses: his oldest male relative; the male parts of the flower.
Masculine refers essentially to qualities, characteristics, or behaviors deemed by a culture or society to be especially appropriate to or ideally associated with men and boys. In American and Western European culture, these have traditionally included features such as strength, forthrightness, and courage: a firm, masculine handshake; a masculine impatience at indecision.
Virile implies a vigor and muscularity associated with mature manhood and often carries a suggestion of sexual or procreative potency: his virile good looks; a swaggering, virile walk.
See also manly