Serpentine (7)

I think it could be either:

Which length description are you looking for?:

sinuous

'serpentine' is the definition.
(I've seen this before)

This is the entire clue.

(Other definitions for sinuous that I've seen before include "Wiggly" , "Full of curves, bends" , "Serpentine" , "Having many curves, undulating" , "Curving in and out" .)

I've seen this clue in The Sun and The Guardian.

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