backbore

== English == === Etymology === From back +‎ bore. === Noun === backbore (plural backbores) The section between the throat and shank of the mouthpiece of a brass instrument. === Verb === backbore (third-person singular simple present backbores, present participle backboring, simple past and past participle backbored) (firearms, transitive) To modify (a weapon's barrel) so as to increase the bore diameter. Hypernyms: bore < cut (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 ==== Related terms ==== overbore === Anagrams === Baerbock