The Collaborative International Dictionary of English v.0.48:

frilled \frilled\ (fr[i^]ld), a.
   Furnished with a frill or frills.
   [1913 Webster]

   Frilled lizard (Zool.), a large Australian lizard
      (Chlamydosaurus Kingii) about three feet long, which has
      a large, erectile frill on each side of the neck.
      [1913 Webster]

WordNet (r) 3.0 (2006):

frilled lizard
    n 1: large arboreal insectivorous Australian lizard with a ruff
         of skin around the neck [syn: frilled lizard,
         Chlamydosaurus kingi]