The case or housing of a pump (originally a ship's pump), or the valve of a pump. Also: the piston of a simple reciprocating pump, typically…

= pump rod, n.

A length of tree trunk used as the body or stock of a handpump, or as a water pipe (cf. pump log, n.); (hence) the stock, barrel, or cylinder of a…

In Architecture the rib of a Gothic vault; in Zoology (see quot. 1881); in Mechanics the beam or axle of a pump or similar machine; also, a bolt or…

A rod connecting the piston or plunger of a pump with the motive power.

a gauge incorporating a pear-shaped glass vessel and a tube with one end dipped into a container of mercury, which measures the air pressure in a…

an appliance resembling a barometer, attached to the receiver of an air-pump to indicate the rarity of the air within.

the cover of an opening which gives access to the buckets of a pump.

The upper or principal extremity of various things, esp. when projecting, distinct, removable, or of… Mechanics. A plate or structure closing the…

(see quot.).

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Frequently in form air line or air-line. A pipe or tube conveying or containing air under pressure.