Tompion tompion • tompiper · · · Info · Definitions · Synonyms · Characters · · Tompion · · Text Latin · · Script 7 · · Length 2 · · Syllables Definitions · · · (noun) plug for the muzzle of a gun to keep out dust and moisture. Synonyms: tampion, tompion. · · Noun Definition 1 Synonyms · · · tampion · · Synonym 1 Characters · · T latin capital letter t U+0054 i latin small letter i U+0069 m latin small letter m U+006D n latin small letter n U+006E o latin small letter o U+006F p latin small letter p U+0070