From Longman Dictionary of Contemporary English.22.22 /ˌtwenti ˈtuː/ noun [countable] PMWa gun that fires small bullets, used for hunting small animals
Examples from the Corpus
.22• A majority of twenty-two when we had counted on sixty as a minimum.• Her accomplice, a square-shouldered young man of perhaps twenty-two, held a copy of my resume.• I stayed on the project full time for fourteen years and part time for another twenty-two.• I was twenty-two then and already had left Boulder three times, only to go back.• Irene nursed it up to twenty-two.• Thirty-six had gone out on that boat, twenty-two of them men, and only the women were coming back.• Two of them are automatic pistols, caliber twenty-two, manufactured by High Standard. 