Source : Webster's Revised Unabridged Dictionary (1913)

Slicker \Slick"er\, n.
   That which makes smooth or sleek. Specifically:
   (a) A kind of burnisher for leather.
   (b) (Founding) A curved tool for smoothing the surfaces of a
       mold after the withdrawal of the pattern.

Slicker \Slick"er\, n.
   A waterproof coat. [Western U.S.]

Source : WordNet®

slicker
     n 1: a macintosh made from cotton fabric treated with oil and
          pigment to make it waterproof [syn: {oilskin}]
     2: a person with good manners and stylish clothing
     3: someone who leads you to believe something that is not true
        [syn: {deceiver}, {cheat}, {cheater}, {trickster}, {beguiler}]