noun (n)

• long coarse hair growing from the crest of the animal's neck(noun.animal)

  source: wordnet30
• growth of hair covering the scalp of a human being(noun.body)

  Synonym:
  head of hair
  

  source: wordnet30
• The long and heavy hair growing on the upper side of, or about, the neck of some quadrupedal animals, as the horse, the lion, etc. See Illust. of Horse.(noun)

  source: webster1913