suction

(noun) a force over an area produced by a pressure difference.

(noun) the act of sucking. Synonyms: sucking, suck.

(verb) remove or draw away by the force of suction. Example: "The doctors had to suction the water from the patient's lungs."

(verb) empty or clean (a body cavity) by the force of suction. Example: "Suction the uterus in an abortion."