Source : Webster's Revised Unabridged Dictionary (1913)

Heaver \Heav"er\, n.
   1. One who, or that which, heaves or lifts; a laborer
      employed on docks in handling freight; as, a coal heaver.

   2. (Naut.) A bar used as a lever. --Totten.

Source : WordNet®

heaver
     n 1: a bar used as a lever (as in twisting rope)
     2: a workman who heaves freight or bulk goods (especially at a
        dockyard)