Crush as a term is used to describe a person who evokes strong admiration (to the level of boundless adoration). It is a nickname that is often used in informal spoken language or in popular culture. Usually, "crush" is used to describe a person's physical attractiveness. For example, when someone says "she's my crush" or "he's my crush," it means that this person evokes strong admiration for their appearance in the speaking person. Although sometimes it can work in synergy with other traits of the person and their activities.