The Collaborative International Dictionary of English v.0.48:

Kelt \Kelt\, n.
   See Kilt, n. --Jamieson.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Kelt \Kelt\, n. [Cf. Icel. kult quilt.]
   Cloth with the nap, generally of native black wool. [Scot.]
   --Jamieson.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Kelt \Kelt\, n.
   A salmon after spawning. [Scot.]
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Kelt \Kelt\, n.
   Same as Celt, one of Celtic race.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

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.]
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Celt \Celt\ (s[e^]lt; k[e^]lt), n. [L. Celtae, Gr. Keltoi`,
   Ke`ltai, pl.: cf. W. Celtiad one that dwells in a covert, an
   inhabitant of the wood, a Celt, fr. celt covert, shelter,
   celu to hide.]
   One of an ancient race of people, who formerly inhabited a
   great part of Central and Western Europe, and whose
   descendants at the present day occupy Ireland, Wales, the
   Highlands of Scotland, and the northern shores of France.
   [Written also Kelt. The letter C was pronounced hard in
   Celtic languages.]
   [1913 Webster]

WordNet (r) 3.0 (2006):

Kelt
    n 1: a member of a European people who once occupied Britain and
         Spain and Gaul prior to Roman times [syn: Celt, Kelt]