The DICT Development Group
1 definition found
for Breech plug
From The Collaborative International Dictionary of English v.0.48 :
Plug \Plug\, n. [Akin to D. plug, G. pflock, Dan. pl["o]k, plug,
Sw. plugg; cf. W. ploc.]
1. Any piece of wood, metal, or other substance used to stop
or fill a hole; a stopple.
2. A flat oblong cake of pressed tobacco. [U. S.]
3. A high, tapering silk hat. [Slang, U.S.]
4. A worthless horse. [Slang, U.S.]
5. (Building) A block of wood let into a wall, to afford a
hold for nails.
6. An act of plugging; a brief mention for the sake of
publicity or advertisement, especially during a public
event not specifically intended for advertising purposes;
as, he put in a plug for his favorite charity.
Breech plug (Gun.), in breech-loading guns, the metal plug
or cylinder which closes the aperture in the breech,
through which the gun is loaded.
Fire plug, a street hydrant to which hose may be attached.
Hawse plug (Naut.), a plug to stop a hawse hole.
Plug and feather. (Stone Working) See Feather, n., 7.
Plug centerbit, a centerbit ending in a small cylinder
instead of a point, so as to follow and enlarge a hole
previously made, or to form a counterbore around it.
Plug rod (Steam Eng.), a rod attached to the beam for
working the valves, as in the Cornish engine.
Plug valve (Mech.), a tapering valve, which turns in a case
like the plug of a faucet.
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