hydraulic ram

noun

1. a device by which the energy of descending water is utilized to raise a part of the water to a height greater than that of the source.

hydraulic ram

noun

1. any large device involving the displacement of a piston or plunger driven by fluid pressure

2. a form of water pump utilizing the kinetic energy of running water to provide static pressure to raise water to a reservoir higher than the source

Word History and Origins

Origin of hydraulic ram¹

First recorded in 1800–10