The Collaborative International Dictionary
tampeon
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.]
A wooden stopper, or plug, as for a cannon or other piece of ordnance, when not in use.
(Mus.) A plug for upper end of an organ pipe.
Wiktionary
tampeon
n. (alternative form of tampion English)