Kel"pie, Kel"py, n.; pl. Kelpies (#). [Cf. Gael. cailpeach, calpach, colpach, a heifer, steer, colt, colpa a cow or horse.] Scotch Myth.
An imaginary spirit of the waters, horselike in form, vulgarly believed to warn, by preternatural noises and lights, those who are to be drowned.
© Webster 1913.