What is the meaning of sucking?

noun

• The act of sucking.
  • synonyms: suck, suction

verb

• Draw into the mouth by creating a practical vacuum in the mouth.
  • usage: "suck the poison from the place where the snake bit"; "suck on a straw"; "the baby sucked on the mother's breast"
  • synonyms: suck
• Draw something in by or as if by a vacuum.
  • usage: "Mud was sucking at her feet"
  • synonyms: suck
• Attract by using an inexorable force, inducement, etc..
  • usage: "The current boom in the economy sucked many workers in from abroad"
  • synonyms: suck, suck in
• Be inadequate or objectionable.
  • usage: "this sucks"
  • synonyms: suck
• Provide sexual gratification through oral stimulation.
  • synonyms: fellate, suck, blow, go down on
• Take in, also metaphorically.
  • usage: "The sponge absorbs water well"; "She drew strength from the minister's words"
  • synonyms: absorb, suck, imbibe, soak up, sop up, suck up, draw, take in, take up
• Give suck to.
  • usage: "The wetnurse suckled the infant"; "You cannot nurse your baby in public in some places"
  • synonyms: breastfeed, suckle, suck, nurse, wet-nurse, lactate, give suck