kilts

plural noun

a garment resembling a knee-length skirt of pleated tartan cloth, traditionally worn by men as part of Scottish Highland dress and now also worn by women and girls.

1. gather (a garment or material) in vertical pleats.
2. tuck up one's skirts around one's body.

Middle English (as a verb in the sense ‘tuck up around the body’): of Scandinavian origin; compare with Danish kilte (op) ‘tuck (up)’ and Old Norse kilting ‘a skirt’. The noun dates from the mid 18th century.