The noun suck has 1 sense (first 1 from tagged texts)
1. (1) sucking, suck, suction -- (the act of sucking)
Overview of verb suck
The verb suck has 5 senses (first 2 from tagged texts)
1. (4) 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. (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. 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")
5. breastfeed, bottle-feed, 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")