kilt (n.) Look up kilt at Dictionary.com
"plaited tartan skirt," originally the part of the belted plaid which hung below the waist, c. 1730, quelt, from Middle English verb kilten "to tuck up" (mid-14c.), from a Scandinavian source (compare Danish kilte op "to tuck up;" Old Norse kilting "shirt," kjalta "fold made by gathering up to the knees").
kilt (v.) Look up kilt at Dictionary.com
"to tuck up," mid-14c., surviving in Scottish, a word of Scandinavian origin (compare Danish kilte "to truss, to tuck up," Swedish kilta "swaddle"); see kilt (n.). Related: Kilted; kilting.