[1] : The Collaborative International Dictionary of English v.0.48

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.
       1913 webster

[2] : The Collaborative International Dictionary of English v.0.48

slicker \slick"er\, n.
   a waterproof coat. western u.s.
   1913 webster

[3] : WordNet (r) 2.0

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
see also:
oilskin deceiver cheat cheater trickster beguiler 

[4] : Moby Thesaurus II by Grady Ward, 1.0

50 moby thesaurus words for "slicker":
   abradant, abrasive, bunco artist, bunco steerer, burnish,
   cardsharp, cardsharper, carpetbagger, cheat, cheater, city slicker,
   con artist, con man, confidence man, cosmopolitan, cosmopolite,
   crimp, defrauder, diddler, double-dealer, flimflammer, gypper,
   horse coper, horse trader, jackleg, land pirate, land shark,
   land-grabber, lawn-roller, man of experience, man-about-town,
   mortgage shark, mountebank, pettifogger, pitchman, polish, roller,
   shark, sharp, sharper, sharpie, shortchanger, shyster, sleeker,
   smooth, smoother, sophisticate, spieler, swindler, trickster

Slicker >> S Words
Slicker, definition of term: Slicker
slicker_pag1.html