Definition of rifle noun from the Oxford Advanced Learner's Dictionary

 

rifle

 noun
noun
BrE BrE//ˈraɪfl//
 
; NAmE NAmE//ˈraɪfl//
 
Weapons
 
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a gun with a long barrel which you hold to your shoulder to fire a hunting rifle an assault rifle See related entries: Weapons Word Originnoun mid 17th cent.: from French rifler ‘graze, scratch’, of Germanic origin. The earliest noun usage was in rifle gun, which had “rifles” or spiral grooves cut into the inside of the barrel.
See the Oxford Advanced American Dictionary entry: rifle