The Collaborative International Dictionary
Sucking stomach
Sucking \Suck"ing\, a. Drawing milk from the mother or dam; hence, colloquially, young, inexperienced, as, a sucking infant; a sucking calf.
I suppose you are a young barrister, sucking lawyer, or
that sort of thing.
--Thackeray.
Sucking bottle, a feeding bottle. See under Bottle.
Sucking fish (Zo["o]l.), the remora. See Remora.
--Baird.
Sucking pump, a suction pump. See under Suction.
Sucking stomach (Zo["o]l.), the muscular first stomach of certain insects and other invertebrates which suck liquid food.