Webster's 1828 Dictionary
SUCKING
ppr. Drawing with the mouth or with an instrument; imbibing; absorbing.
SUCKING-BOTTLE
n.A bottle to be filled with milk for infants to suck instead of the pap.
Webster's 1913 Dictionary
SUCKING
SUCKING Suck "ing, a.
Defn: 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 (Zoöl.), the remora. See Remora. Baird. -- Sucking pump, a suction pump. See under Suction. -- Sucking stomach (Zoöl.), the muscular first stomach of certain insects and other invertebrates which suck liquid food.
New American Oxford Dictionary
sucking disc
sucking disc ▶noun Zoology an animal's sucker, especially one on the end of each tube foot of an echinoderm.
Oxford Dictionary
sucking
sucking |ˈsʌkɪŋ | ▶adjective (of a child or animal ) not yet weaned.
sucking disc
sucking disc ▶noun Zoology an animal's sucker, especially one on the end of each tube foot of an echinoderm.
The Wordsmith Dictionary