Source : Webster's Revised Unabridged Dictionary (1913)

Kilt \Kilt\, v. t. [imp. & p. p. {Kilted}; p. pr. & vb. n.
   {Kilting}.]
   To tuck up; to truss up, as the clothes. [Scot.] --Sir W.
   Scott.

Kilt \Kilt\,
   p. p. from {Kill}. [Obs.] --Spenser.

Kilt \Kilt\, n. [OGael. cealt clothes, or rather perh. fr. Dan.
   kilte op to truss, tie up, tuck up.]
   A kind of short petticoat, reaching from the waist to the
   knees, worn in the Highlands of Scotland by men, and in the
   Lowlands by young boys; a filibeg. [Written also {kelt}.]

Source : WordNet®

kilt
     n : a knee-length pleated tartan skirt worn by men in the
         Highlands of northern Scotland