Plug /(?)/

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. [U. S.]
  3. A high, tapering silk hat. [Slang, U.S.]
  4. A worthless horse. [Slang, U.S.]
  5. A block of wood let into a wall, to afford a hold for nails. (Building)
  6. An act of plugging{6}; 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.

Phrases & Compounds
Breech plug
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
a plug to stop a hawse hole.
Plug and feather
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
, a rod attached to the beam for working the valves, as in the Cornish engine.
Plug valve
a tapering valve, which turns in a case like the plug of a faucet.

Plug

v. t.

imp. & p. p. Plugged; p. pr. & vb. n. Plugging

  1. To stop with a plug; to make tight by stopping a hole.
  2. To briefly publicize or advertise, especially during a public event not specifically intended for advertising purposes; as, during the interview he plugged his new book.