S: (v) 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"
S: (v) suck (draw something in by or as if by a vacuum) "Mud was sucking at her feet"
S: (v) suck, suck in (attract by using an inexorable force, inducement, etc.) "The current boom in the economy sucked many workers in from abroad"