The Collaborative International Dictionary of English v.0.48:

Mantilla \Man*til"la\, n. [Sp. See Mantle.]
   1. A lady's light cloak of cape of silk, velvet, lace, or the
      like.
      [1913 Webster]

   2. A kind of veil, covering the head and falling down upon
      the shoulders; -- worn in Spain, Mexico, etc.
      [1913 Webster] Mantinea

WordNet (r) 3.0 (2006):

mantilla
    n 1: a woman's silk or lace scarf
    2: short cape worn by women [syn: mantelet, mantilla]