What is the meaning of Calibre?

Alternative form of caliber.

caliber

calibre

inflection of calibrer:

1. first/third-person singular present indicative/subjunctive
2. second-person singular imperative

first/third-person singular present indicative/subjunctive

second-person singular imperative

caliber / calibre (dimension)

gauge (mathematics, physics)

inflection of calibrar:

1. first/third-person singular present subjunctive
2. third-person singular imperative

first/third-person singular present subjunctive

third-person singular imperative

calibre

calipers

jig, gauge (tool)

inflection of calibrar:

1. first/third-person singular present subjunctive
2. third-person singular imperative

first/third-person singular present subjunctive

third-person singular imperative

Source: wiktionary.org