definition of
suction

[1] #1 suction n. a force over an area produced by a pressure difference. wn

[2] #2 suction v. remove or draw away by the force of suction; "the doctors had to suction the water from the patient's lungs". wn

[3] #3 suction n. [sucking, suck] the act of sucking. wn

[4] #4 suction v. empty or clean (a body cavity) by the force of suction; "suction the uterus in an abortion". wn