The Collaborative International Dictionary of English v.0.48:

tchotchke \tchotch"ke\ n.
   1. [Yiddish tshatshke, trinket, from Pol. czaczko. --MW10.] a
      knickknack or trinket; a decorative item or souvenir of
      little value. [Also spelled chotchke.]
      [PJC]

WordNet (r) 3.0 (2006):

tchotchke
    n 1: (Yiddish) an attractive, unconventional woman [syn:
         chachka, tsatske, tshatshke, tchotchke,
         tchotchkeleh]
    2: (Yiddish) an inexpensive showy trinket [syn: chachka,
       tsatske, tshatshke, tchotchke]