·noun The iron bottom to which grapeshot are fixed.
II. Tompion ·noun A plug in a flute or an organ pipe, to modulate the tone.
III. Tompion ·noun A stopper of a cannon or a musket. ·see Tampion.
A circular plug of wood, used to stop the muzzle of a gun, and thereby keep out the wet at sea. The ...
The Sailor's Word-Book