hauberk (n.)

c. 1300, from Old French hauberc "coat of mail," earlier holberc, from Frankish *halsberg or a similar Germanic source, literally "neck-cover" (cognates: Old English halsbearh, Old High German halsberc). The second element is *bergan "to cover, protect" (from PIE root *bhergh- (1) "to hide, protect"). The first is *hals "neck," (source also of Old English, Old Norse, Danish, Swedish, Dutch, German, Gothic hals, from PIE root from PIE root *kwel- (1) "revolve, move round; sojourn, dwell."