yabby pump noun1 •(Australia) A large hand-operated syringe-like suction pump, made of metal tubing with a rubber plunger, used to harvest ghost shrimp (prototypically the marine yabby) and other burrowing crustaceans from intertidal environments.The specimens were collected with a yabby pump in Carenero lagoon, South coast of La Tortuga Island (10º53’N 65º14’W), Venezuela. — 2005 formsyabby pumps