Definition of Plug

n.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.
3.A high, tapering silk hat.
4.A worthless horse.
5.(Building) A block of wood let into a wall, to afford a hold for nails.
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.
v. t.1.To stop with a plug; to make tight by stopping a hole.
[imp. & p. p. Plugged ; p. pr. & vb. n. Plugging .]

Related Words

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Plowman's spikenard
Plowshare bone
Plucker tube
Plug and feather
Plug board
Plug centerbit
Plug rod
Plug tap
Plug valve
Plum bird
Plum gouger
plum tub
Plum weevil
Plumb bob
Plumb joint
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