airgun

 Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++air·gun /ˈeəɡʌn $ ˈer-/ noun [countable]  a gun that uses air pressure to fire a small round bullet 气枪

Examples from the Corpus

airgun• The pop was from an airgun, not a bullet, being fired.

air·gun nounChineseSyllable  

fire gun a uses Corpus that a air to pressure

airgun
air‧gun /ˈeəɡʌn $ ˈer-/ noun [countable]
a gun that uses air pressure to fire a small round bullet

air·gunBrE /ˈeəɡʌn/ 🔊NAmE /ˈerɡʌn/ 🔊 (also ˈair rifle) nouna gun that uses air pressure to fire small metal balls (called pellets) 气枪