Meandering, serpentine (7)
I believe the answer is:
sinuous
I believe this is a double definition.
'meandering' is the first definition.
(thesaurus)
'serpentine' is the second definition.
(I've seen this before)
(Other definitions for sinuous that I've seen before include "Wavy -- winding" , "Lithe, supple; curvy" , "Serpentine" , "Supply bending; wavy" , "Wiggly" .)