'Tampion' definitions:

Definition of 'tampion'

From: WordNet
noun
Plug for the muzzle of a gun to keep out dust and moisture [syn: tampion, tompion]

Definition of 'Tampion'

From: GCIDE
  • 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. [1913 Webster]
  • 2. (Mus.) A plug for upper end of an organ pipe. [1913 Webster]