[ 'kalɪbə ]
( US caliber )
■ noun
1》 quality of character or level of ability.
↘the standard reached by something.
2》 the internal diameter of a gun barrel.
↘the diameter of a bullet, shell, or rocket.
Derivatives
~d adjective
Origin
C16 (in the sense 'social standing'): from Fr., from Ital. calibro , perh. from Arab. ḳālib 'mould'.