The Collaborative International Dictionary of English v.0.48:

Nacarat \Nac"a*rat\ (n[a^]k"[.a]*r[a^]t), n. [F. nacarat, fr.
   Sp. or Pg. nacarado, fr. n['a]car mother-of-pearl. See
   Nacre.]
   1. A pale red color, with a cast of orange. --Ure.
      [1913 Webster]

   2. Fine linen or crape dyed of this color. --Ure.
      [1913 Webster]