noun
: a pump in which a small jet of steam, air, water, or other fluid in rapid motion lifts or otherwise moves by its impulse a large quantity of the fluid with which it mingles
noun
: a pump in which a small jet of steam, air, water, or other fluid in rapid motion lifts or otherwise moves by its impulse a large quantity of the fluid with which it mingles
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012