a gun that can be carriedThe police were issued with firearms.Oxford Collocations Dictionaryadjectiveimitation,replica,unlicensed,…verb + firearmbe in possession of,own,possess,…firearms + nountraining,enthusiast,expert,…Seefull entrySee related entries:WeaponsExtra examplesThe police charged her with possessing a firearm with intent to endanger life.The police charged her with possessing an illegal firearm.new army recruits learning how to handle firearms
See firearm in the Oxford Advanced American Dictionary