"sucking" in the noun sense
1. sucking, suck, suction
the act of sucking
"sucking" in the verb sense
1. suck
draw into the mouth by creating a practical vacuum in the mouth
"suck the poison from the place where the snake bit"
"suck on a straw"
"the baby sucked on the mother's breast"
2. suck
draw something in by or as if by a vacuum
"Mud was sucking at her feet"
3. suck, suck in
attract by using an inexorable force, inducement, etc.
"The current boom in the economy sucked many workers in from abroad"
4. suck, blow
be inadequate or objectionable
"this sucks!"
"this blows!"
5. fellate, suck, blow, go down on
provide sexual gratification through oral stimulation
6. absorb, suck, imbibe, soak up, sop up, suck up, draw, take in, take up
take in, also metaphorically
"The sponge absorbs water well"
"She drew strength from the minister's words"
7. breastfeed, suckle, suck, nurse, wet-nurse, lactate, give suck
give suck to
"The wetnurse suckled the infant"
"You cannot nurse your baby in public in some places"
Source: WordNet® (An amazing lexical database of English)
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