tampion

• tampeon
• tompion

From Middle French tampon

tampion (plural tampions)

1. A wooden plug, or a metal or canvas cover for the muzzle of a gun, a cannon or other piece of ordnance when not in use; a stopper; a bung.
2. (music) A plug for the upper end of an organ pipe.

• silencer

• tampion in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913.
• tampion in The Century Dictionary, New York, N.Y.: The Century Co., 1911.

• main pot, maintop