Definition of "rim-fire" [rim•-fire]

• Having the percussion fulminate in a rim surrounding the base, distinguished from <contr>center-fire</contr>; -- said of cartridges; also, using rim-fire cartridges. Such cartridges are now little used. (adjective)

Gnu Collaboartive International Dictionary of English: licensed under The Code Project Open License (CPOL)

• "I still think that pretty little Browning semi-auto would sell in other rim-fire chamberings."
• "Well, ask him for me if he knows of an adapter that would make it possible to use twenty-two rim-fire cartridges in a thirty-eight revolver."
• "That way, because # .22 caliber long rifle cartridge is rim-fire ignited, the plunger, when released by the trigger, would both fire the piece and act as a breechblock."