backboreとは 意味・読み方・使い方

名詞

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.

動詞

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.

   Hypernyms: bore < cut

2. (machining) To bore from the backside of a workpiece by using a boring tool that passes through one or more through holes, deploys a cutting edge (or receives it by manual insertion from an operator), bores a feature on the far side, retracts the cutting edge (or has it removed), and then retreats back through the hole (toward the tool's origin).

   Hypernyms: bore < cut

   Coordinate terms: counterbore, back-counterbore; countersink, back-countersink; spotface, back-spotface

関連する語

• overbore

アナグラム

• Baerbock