Standard Lemma guide

backbore

noun · verb · 3 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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No pronunciation record was provided for this word.

1

noun

Meaning 1

The section between the throat and shank of the mouthpiece of a brass instrument.

Definition source: English Wiktionary via Wiktextract

Examples

  • More conical backbores give a richer tone, while more cylindrical ones give a brighter, more projected tone.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

verb

Meaning 2

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

Definition source: English Wiktionary via Wiktextract

Usage: transitive

Topics: engineering, firearms, government, military, natural-sciences, physical-sciences, politics, tools, war, weaponry

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: bore, cut

3

verb

Meaning 3

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).

Definition source: English Wiktionary via Wiktextract

Topics: engineering, machining, mechanical-engineering, natural-sciences, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: bore, cut

History

Etymology

From back + bore.