Smooth and shiny (5)
I believe the answer is:
sleek
'smooth and shiny' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for sleek that I've seen before include "Lustrous" , "(Of hair) smooth, glossy" , "Smooth - well-fed" , "With a smooth, gleaming surface" , "Aerodynamic, streamlined" .)