The Collaborative International Dictionary of English v.0.48:

Pompadour \Pom"pa*dour\, n.
   A crimson or pink color; also, a style of dress cut low and
   square in the neck; also, a mode of dressing the hair by
   drawing it straight back from the forehead over a roll; -- so
   called after the Marchioness de Pompadour of France. Also
   much used adjectively.
   [1913 Webster]

WordNet (r) 3.0 (2006):

Pompadour
    n 1: French noblewoman who was the lover of Louis XV, whose
         policies she influenced (1721-1764) [syn: Pompadour,
         Marquise de Pompadour, Jeanne Antoinette Poisson]
    2: a hair style in which the front hair is swept up from the
       forehead
    v 1: style women's hair in a pompadour