The Collaborative International Dictionary of English v.0.48:

Handwriting \Hand"writ`ing\ (-r[imac]t"[i^]ng), n.
   1. The cast or form of writing peculiar to each hand or
      person; chirography.
      [1913 Webster]

   2. That which is written by hand; manuscript.
      [1913 Webster]

   The handwriting on the wall, a doom pronounced; an omen of
      disaster. --Dan. v. 5.
      [1913 Webster] handwritten

WordNet (r) 3.0 (2006):

handwriting
    n 1: something written by hand; "she recognized his
         handwriting"; "his hand was illegible" [syn: handwriting,
         hand, script]
    2: the activity of writing by hand; "handwriting can be slow and
       painful for one with arthritis"