Real Dictionary

kilt
countable noun: A kilt is a skirt with a lot of vertical folds, traditionally worn by Scottish men. Kilts can also be worn by women and children.

kilt in American English
a pleated skirt reaching to the knees; esp., the tartan skirt worn sometimes by men of the Scottish Highlands
to tuck up (a skirt, etc.)
noun: any short, pleated skirt, esp. a tartan wraparound, as that traditionally worn by men in the Scottish Highlands
transitive verb: to draw or tuck up, as the skirt, about oneself

kilt in British English
to tuck (a skirt) up around one's body
noun: a knee-length pleated skirt-like garment, esp one in tartan, as worn by men in Scottish Highland dress