The Collaborative International Dictionary of English v.0.48:

Frapp'e \Frap`p['e]"\ or Frappe \Frappe\(fr[.a]`p[=a]"), a. [F.,
   p.p. of frapper to strike, to chill.]
   Iced; frozen; artificially cooled; as, wine frapp['e]. --
   (fr[.a]`p[=a]" or fr[a^]p)n. A frapp['e] mixture or beverage,
   as a water ice, variously flavored, frozen soft, and served
   in glasses; also, a milk shake.
   [Webster 1913 Suppl.]

WordNet (r) 3.0 (2006):

frappe
    n 1: liqueur poured over shaved ice
    2: thick milkshake containing ice cream
    3: a frozen dessert with fruit flavoring (especially one
       containing no milk) [syn: ice, frappe]