Hypertext Webster Gateway: "plug"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Plug \Plug\, n.
{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. Plug board \Plug board\
(Elec.)
A switchboard in which connections are made by means of
plugs.
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Plug \Plug\, v. t. [imp. & p. p. {Plugged}; p. pr. & vb. n.
{Plugging}.]
To stop with a plug; to make tight by stopping a hole.
From Webster's Revised Unabridged Dictionary (1913) (web1913)
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.
{Fire plug}, a street hydrant to which hose may be attached.
[U. S.]
{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.
From WordNet (r) 1.7 (wn)
plug
n 1: blockage consisting of an object designed to fill a hole
tightly [syn: {stopper}, {stopple}]
2: a wad of something chewable as tobacco [syn: {chew}, {chaw},
{cud}, {quid}, {wad}]
3: blatant or sensational promotion [syn: {ballyhoo}, {hoopla},
{hype}]
4: electrical device that fits into the cylinder head of an
internal-combustion engine and ignites the gas by means of
an electric spark [syn: {spark plug}, {sparking plug}]
5: an electrical device with two or three pins that is inserted
in a socket to make an electrical connection [syn: {male
plug}]
6: an upright hydrant for drawing water to use in fighting a
fire [syn: {fireplug}, {fire hydrant}]
7: an old or over-worked horse [syn: {hack}, {jade}, {nag}]
v 1: fill or close tightly with or as if with a plug; "plug the
hole"; "stop up the leak" [syn: {stop up}, {secure}]
2: persist in working hard; "Students must plug away at this
problem" [syn: {plug away}]
3: deliver a punch to [syn: {punch}]
4: make a plug for; praise the qualities or in order to sell or
promote
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