Sark
wiktionary
From Middle English serk, sark, serke, from Old English serc, syrcm; and syrce, sirce, sercef(“sark, shirt, shift, smock, tunic, corselet, coat of mail”), from Proto-West Germanic *sarki, from Proto-Germanic *sarkiz(“shirt, armour, hauberk”), from Proto-Indo-European *swerg-, *swerk-(“clothes worn outside”), from Proto-Indo-European *ser-(“to arrange, tack, tie, unite”).
Cognate with Scots sark, serk(“shirt, shift”), North Frisian serk(“shirt”), Danish særk(“gown, shirt”), Swedish särk(“shirt, chemise”), Icelandic serkur(“nightshirt”).
sark (third-person singular simple present sarks, present participle sarking, simple past and past participle sarked)
etymonline
sark (n.)
"shirt, body garment of linen or cotton for either sex," late Old English serc "shirt, corselet, coat of mail," surviving as a Scottish and northern dialect word, from Old Norse serkr, cognate with Old English serk (see berserk). But Gordon lists it as a loan-word from Latin sarcia; other sources are silent on the point. Lithuanian šarkas "shirt," Old Church Slavonic sraka "tunic," Russian soročka, Finnish sarkki "shirt" perhaps are all from Germanic.
