backbore

English

Etymology

back +‎ bore

Noun

backbore (plural backbores)

  1. The section between the throat and shank of the mouthpiece of a brass instrument.
    More conical backbores give a richer tone, while more cylindrical ones give a brighter, more projected tone.

Verb

backbore (third-person singular simple present backbores, present participle backboring, simple past and past participle backbored)

  1. (firearms, transitive) To modify (a weapon's barrel) so as to increase the bore diameter.
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