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

hairpiece \hair"piece`\ n.
   a covering or bunch of human or artificial hair used for
   disguise or adornment; a toupee.

   syn: false hair, postiche, toupee.
        wordnet 1.5

[2] : WordNet (r) 2.0

hairpiece
     n : a covering or bunch of human or artificial hair used for
         disguise or adornment syn: false hair, postiche
see also:
false hair postiche 

Hairpiece >> H Words
Hairpiece, definition of term: Hairpiece
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