Hypertext Webster Gateway: "Tampion"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Tampion \Tam"pi*on\, n. [F. tampon, tapon, tape, of Dutch or
German origin. See {Tap} a pipe or plug, and cf. {Tamp},
{Tampop}, {Tompion}.] [Written also {tampeon}, and
{tompion}.]
1. A wooden stopper, or plug, as for a cannon or other piece
of ordnance, when not in use.
2. (Mus.) A plug for upper end of an organ pipe.
From WordNet (r) 1.7 (wn)
tampion
n : plug for the muzzle of a gun to keep out dust and moisture
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