suction in WordNet English dictionary

1. the act of sucking
   sucking  suck  suction 
   
2. a force over an area produced by a pressure difference
   suction 
   

1. empty or clean (a body cavity) by the force of suction
   "suction the uterus in an abortion"
   suction 
   
2. remove or draw away by the force of suction
   "the doctors had to suction the water from the patient's lungs"
   suction