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1. A knee-length skirt with deep pleats, usually of a tartan wool, worn as part of the dress for men in the Scottish Highlands.
2. A similar skirt worn by women, girls, and boys.
tr.v. kilt·ed, kilt·ing, kilts
To tuck up (something) around the body.
[From kilt, to tuck up, from Middle English kilten, of Scandinavian origin.]