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Noun: caliber  ka-lu-bur
Usage: US (elsewhere: calibre)
  1. A degree or grade of excellence or worth
    "an executive of low caliber";
    - quality, calibre [Brit, Cdn]
  2. Diameter of a tube or gun barrel
    - bore, gauge, calibre [Brit, Cdn]

Derived forms: calibers

See also: inferior, superior

Type of: degree, diam, diameter, grade, level

Encyclopedia: Caliber