crab·ber I. \ˈkrabə(r)\noun (-s) Etymology:crab (I) + -er 1. a.: one that fishes for or catches crabs b.: a boat used in crab fishing 2.: winchman 3.[crab (II) + -er]: an operator of a machine for crabbing II. noun (-s) Etymology:crab (V) + -er : one that carps or complains