Definition of rifling in English:

rifling

Syllabification: ri·fling
Pronunciation: /ˈrīf(ə)liNG
 
/

noun

  • The arrangement of spiral grooves on the inside of a rifle barrel.
    More example sentences
    • There's no rifling in the barrel, and you call it a rifle?
    • The foremost portion of this auxiliary chamber incorporates many small rifling grooves to just stabilize the bullet before it engages the bore.
    • In their six grooves, Colerain barrels feature round bottom rifling that holds less fowling; square bottomed grooves reportedly retain more fowling.

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