Caliber is a kind of measurement that can describe either the level of a person’s ability or the diameter of a gun barrel. Your dad might be a high-caliber marksman, especially when using his .22 caliber rifle.

Caliber describes the level of ability a person has achieved in a profession. For example, you probably wouldn't want to hire a low-caliber plumber when the toilet breaks. The caliber of an institution or a program describes the height of its standards. You might be planning to attend the high-caliber veterinary program at your state university. Caliber is also the measurement of the width inside a gun barrel, and its corresponding bullets.

Definitions of caliber
  1. noun
    diameter of a tube or gun barrel
    synonyms: bore, calibre, gauge
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    type of:
    diam, diameter
    the length of a straight line passing through the center of a circle and connecting two points on the circumference
  2. noun
    a degree or grade of excellence or worth
    “an executive of low caliber
    synonyms: calibre, quality
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    high quality, superiority
    the quality of being superior
    inferiority, low quality
    an inferior quality
    choiceness, fineness
    the quality of being very good indeed
    first class
    the highest rank in a classification
    first water
    the highest quality gems
    cleverness, ingeniousness, ingenuity
    the property of being ingenious
    the quality of being poorly made or maintained
    scrawniness, scrubbiness
    the property of being stunted and inferior in size or quality
    second class
    not the highest quality in a classification
    the quality of being poor and inferior and sorry
    type of:
    degree, grade, level
    a position on a scale of intensity or amount or quality
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