transitive verb

1. to make sleek, glossy, or smooth
2. Informal to make smart, neat, or tidy: usually with up

Etymology: ME slikien < OE slician, to make smooth, akin to ON slikr, smooth < IE *(s)leig-, slimy, to smooth, glide < base *(s)lei-: see slide

adjective

1. sleek; glossy; smooth
2. slippery; oily, as a surface
3. accomplished; adept; clever; ingenious
4. Informal clever in deception or trickery; deceptively plausible; smooth a slick alibi
5. Informal having or showing skill in composition or technique but little depth or literary significance a slick style of writing
6. Slang excellent, fine, enjoyable, attractive, etc.

Etymology: ME slike < the v.

noun

1. ☆
   1. a smooth area on the surface of water, as resulting from a layer of oil
   2. an oily layer on the surface of water
   3. a slippery, oily area on the surface of a road
2. something used for smoothing and polishing, as any of various tools with broad, flat blades
3. ☆ Informal a magazine printed on paper with a glossy finish

adverb