Longman Dictionary English From Longman Dictionary of Contemporary EnglishRelated topics: WeaponsBB gunBB gun /ˈbiː biː ɡʌn/ noun [countable] PMWDLO American English a gun that uses air pressure to shoot small round metal balls SYN airgunOrigin BB gun (1900-2000) BB name given to the size of shot it fires ldoceonline.com
