'Jet pump' definitions:

Definition of 'Jet pump'

From: GCIDE

Jet \Jet\, n. [F. jet, OF. get, giet, L. jactus a throwing, a throw, fr. jacere to throw. Cf. Abject, Ejaculate, Gist, Jess, Jut.] [1913 Webster]
1. A shooting forth; a spouting; a spurt; a sudden rush or gush, as of water from a pipe, or of flame from an orifice; also, that which issues in a jet. [1913 Webster]
2. Drift; scope; range, as of an argument. [Obs.] [1913 Webster]
3. The sprue of a type, which is broken from it when the type is cold. --Knight. [1913 Webster]
Jet propeller (Naut.), a device for propelling vessels by means of a forcible jet of water ejected from the vessel, as by a centrifugal pump.
Jet pump, a device in which a small jet of steam, air, water, or other fluid, in rapid motion, lifts or otherwise moves, by its impulse, a larger quantity of the fluid with which it mingles. [1913 Webster]