Molt, Moult v. i. [imp. & p. p. Molted or Moulted; p. pr. & vb. n. Molting or Moulting.] [The prevalent spelling is, perhaps, moult; but as the u has not been inserted in the otherwords of this class, as, bolt, colt, dolt, etc., it is desirable to complete the analogy by the spelling molt.] To shed or cast the hair, feathers, skin, horns, or the like, as an animal or a bird.