The Collaborative International Dictionary of English v.0.48:

Cravat \Cra*vat"\ (kr?-v?t"), n. [F. cravate, fr. Cravate a
   Croat, an inhabitant of Croatia, one of a body of Austrian
   troops, from whom, in 1636, this article of dress was adopted
   in France.]
   A neckcloth; a piece of silk, fine muslin, or other cloth,
   worn by men about the neck.
   [1913 Webster]

         While his wig was combed and his cravat tied.
                                                  --Macaulay.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

ascot \ascot\ n. [from the fashionable clothjing worn at the
   Ascot races.]
   a cravat with wide square ends, tied so that the ends are
   laid flat; the ends are often secured with an ornamental pin;
   -- called cravat in Britain.
   [WordNet 1.5 +PJC]

WordNet (r) 3.0 (2006):

cravat
    n 1: neckwear worn in a slipknot with long ends overlapping
         vertically in front