1. a water pump that uses the kinetic energy of flowing water to force a small fraction of that water to a reservoir at a higher level; [syn: hydraulic pump, hydraulic ram]
WordNet (r) 3.0 (2006):
hydraulic pump
n 1: a water pump that uses the kinetic energy of flowing water
to force a small fraction of that water to a reservoir at a
higher level [syn: hydraulic pump, hydraulic ram]