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English definition of “sidearm”

sidearm

noun [C]     /ˈsaɪd.ɑːm/ US  /-ɑːrm/
a weapon worn on the side of the body, especially a small gun or swordHandguns and riflesAiming and aimHand weaponsHand weaponsHandguns and rifles
(Definition of sidearm noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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