From Longman Dictionary of Contemporary Englishjerkinjer‧kin /ˈdʒɜːkɪn $ -ɜːr-/ noun [countable] DCCa short jacket that covers your body but not your arms, worn in the past
Examples from the Corpus
jerkin• One was dressed in a dark blue jerkin and hose.• Strap on your bodices, jerkins and breastplates.• His jerkin was of red satin.• A contemporary picture portrays Schmidt as a tall well-built man, full bearded, in jerkin and knee-length hose.• Jenny, in a purple tweed skirt and a leather jerkin and black boots, stepped delicately inside.• She tugged off his patterned trousers and the leather jerkin.• Maeve ordered him to be stripped of his travel-stained jerkin and leggings.• They flexed their claws on their medallions, up and down the zips of their jerkins. 