{To hang over}. (a) To project at the top. (b) To impend over. {To hang to}, to cling. {To hang together}. (a) To remain united; to stand by one another. ``We are all of a piece; we hang together.'' --Dryden. (b) To be self-consistent; as, the story does not hang together. [Colloq.] {To hang upon}. (a) To regard with passionate affection. (b) (Mil.) To hover around; as, to hang upon the flanks of a retreating enemy.