Main entry: come in, throw in, inject, interject, interpose, put in
Definition: to insert between other elements
Usage: She interjected clever remarks
Main entry: quit, throw in, throw in the towel, drop by the wayside, drop out, fall by the wayside, chuck up the sponge, give up
Definition: give up in the face of defeat of lacking hope; admit defeat
Usage: In the second round, the challenger gave up
Main entry: throw in
Definition: add as an extra or as a gratuity