from
The Collaborative International Dictionary of English v.0.48
Pump \Pump\, n. [Akin to D. pomp, G. pumpe, F. pompe; of unknown
origin.]
An hydraulic machine, variously constructed, for raising or
transferring fluids, consisting essentially of a moving piece
or piston working in a hollow cylinder or other cavity, with
valves properly placed for admitting or retaining the fluid
as it is drawn or driven through them by the action of the
piston.
[1913 Webster]
Note: for various kinds of pumps, see {Air pump}, {Chain
pump}, and {Force pump}; also, under {Lifting},
{Plunger}, {Rotary}, etc.
[1913 Webster]
{Circulating pump} (Steam Engine), a pump for driving the
condensing water through the casing, or tubes, of a
surface condenser.
{Pump brake}. See {Pump handle}, below.
{Pump dale}. See {Dale}.
{Pump gear}, the apparatus belonging to a pump. --Totten.
{Pump handle}, the lever, worked by hand, by which motion is
given to the bucket of a pump.
{Pump hood}, a semicylindrical appendage covering the upper
wheel of a chain pump.
{Pump rod}, the rod to which the bucket of a pump is
fastened, and which is attached to the brake or handle;
the piston rod.
{Pump room}, a place or room at a mineral spring where the
waters are drawn and drunk. [Eng.]
{Pump spear}. Same as {Pump rod}, above.
{Pump stock}, the stationary part, body, or barrel of a pump.
{Pump well}. (Naut.) See {Well}.
[1913 Webster]