A nude or revealing picture sent to illicit a response from someone that is showing disinterest in you , or has ghosted you in order to get a response.

When someone sends you a deep and heartfelt message, allowing you to see their true feelings

A form of naked picture sent over the internet.
Different from a nude (which is a naked picture sent by the postal system, taken by a polaroid camera.)

when you send 'nudes' fully clothed but taken on self timer with your foot holding your phone. your thighs MUST be in the frame.

a nude sent before blocking someone as an act of sympathy and to lessen the blow

A nude in which the sender covers up their genitals with something like strip of clothing.