The Collaborative International Dictionary of English v.0.48:

Rabat \Rab"at\ (r[a^]b"[a^]t), n. [See Rabot.]
   A polishing material made of potter's clay that has failed in
   baking.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Rabat \Ra`bat"\ (r[.a]*b[=a]t"), n. [F. Cf. Rabato.] (Eccl.)
   (a) A clerical linen collar.
   (b) A kind of clerical scarf fitted to a collar; as, a black
       silk rabat.
       [Webster 1913 Suppl.]

WordNet (r) 3.0 (2006):

Rabat
    n 1: the capital of Morocco; located in the northwestern on the
         Atlantic coast [syn: Rabat, capital of Morocco]