[1] : The Collaborative International Dictionary of English v.0.48

hairiness \hair"iness\ -i^ne^s, n.
   1. the state of abounding, or being covered, with hair.
      --johnson.
      1913 webster

   2. the quality of being hairy.
      pjc

[2] : WordNet (r) 2.0

hairiness
     n : the quality of having hair ant: hairlessness
see also:
hairlessness 

[3] : Moby Thesaurus II by Grady Ward, 1.0

20 moby thesaurus words for "hairiness":
   abstruseness, arduousness, bothersomeness, burdensomeness,
   complexity, complication, difficultness, difficulty, hardness,
   intricacy, laboriousness, onerousness, oppressiveness, rigor,
   rigorousness, ruggedness, strenuousness, toilsomeness, toughness,
   troublesomeness

Hairiness >> H Words
Hairiness, definition of term: Hairiness
hairiness_pag1.html