breech closer breech bolt • breechcloth · · · Info · Definitions · Synonyms · Characters · · breech closer · · Text Common · · Latin · · Scripts 13 · · Length 3 · · Syllables Definitions · · · (noun) a metal block in breech-loading firearms that is withdrawn to insert a cartridge and replaced to close the breech before firing. Synonyms: breechblock, breech closer. · · Noun Definition 1 Synonyms · · · breechblock · · Synonym 1 Characters · · space U+0020 b latin small letter b U+0062 c latin small letter c U+0063 e latin small letter e U+0065 h latin small letter h U+0068 l latin small letter l U+006C o latin small letter o U+006F r latin small letter r U+0072 s latin small letter s U+0073