suck definition

1. the act of sucking
2. draw into the mouth by creating a practical vacuum in the mouth
• examples: suck the poison from the place where the snake bit
• examples: suck on a straw
• examples: the baby sucked on the mother's breast
3. draw something in by or as if by a vacuum
• examples: Mud was sucking at her feet
4. attract by using an inexorable force, inducement, etc.
• examples: The current boom in the economy sucked many workers in from abroad
5. be inadequate or objectionable
• examples: this sucks!