.22 caliber is an adjective meaning "of or relating to the bore of a gun (or its ammunition) that measures twenty-two hundredths of an inch in diameter". It carries one recorded sense.
of or relating to the bore of a gun (or its ammunition) that measures twenty-two hundredths of an inch in diameter
“a .22 caliber pistol”
Definitions, synonyms and semantic relations for .22 caliber come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.