pumppump1 /pʌmp/  ●●○ noun [countable] 
1
 a machine that forces liquid or gas into or out of something: 
 a water/fuel/gas etc. pump
 a bicycle pump2a woman’s plain shoe that does not fasten: 
 a pair of black pumps3also gas pump a machine at a gas station, used to put gasoline into a car [Origin: (1) 1400–1500 Middle Low German pumpe or  Middle Dutch pompe]
                                            
                                        
