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Webster 1913 Edition

Noun.

[See

]

A stopper of a cannon or a musket. See

(Mus.)

A plug in a flute or an organ pipe, to modulate the tone.

Knight.

The iron bottom to which grapeshot are fixed.

Noun.

The stopper of a cannon or other piece of ordnance, consisting of a cylinder of wood.

tompion ‎(plural tompions)