caliber
cal-i-ber · noun
Definitions
noun
- 1.
The internal diameter of a gun barrel or the diameter of a bullet or shell.
- 2.
The quality or level of someone's ability or the standard of something.
- 3.
The diameter of a round or cylindrical body, especially a tube or pipe.
Forms
plural: calibers
Phrases & expressions
- •of high caliber — of excellent quality
- •of that caliber — of that level or standard
Related words
Etymology
From French calibre, from Italian calibro, possibly from Arabic qalib ("mold, form, last") or from Greek kalopodion ("shoemaker's last"). Originally referred to the size of a bullet or bore of a firearm.