Source : Webster's Revised Unabridged Dictionary (1913)

   {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.