Merriam-Webster's Collegiate® Dictionary, 11th Edition
SLICK
I. verb
Etymology: Middle English sliken, from Old English *slician; akin to Old High German slīhhan to glide
Date: 14th century
transitive verb to make sleek or smooth, intransitive verb spruce ,
II. adjective
Etymology: Middle English slyke; akin to Old English *slician
Date: 14th century
1. having a smooth surface ; slippery , having surface plausibility or appeal ; glib , glossy , based on stereotype ; trite , sleek 1,
3. characterized by subtlety or nimble wit ; clever , deft , skillful , extremely good ; first-rate , see: sleek slick adverb slickly adverb slickness noun
III. noun
Date: 1849
1. something that is smooth or slippery, a film of oil, an implement for producing a smooth or slick surface, a shrewd untrustworthy person, a popular magazine printed on coated stock and intended to appeal to sophisticated readers, an automobile tire made without a tread for maximum traction (as in drag racing), a military helicopter without armaments that is used to transport troops or light cargo