Creature caught in meadow hiding in grass (7)
I believe the answer is:
polecat
'creature' is the definition.
(I've seen this before)
'caught in meadow hiding in grass' is the wordplay.
'caught' becomes 'c' (cricket abbreviation).
'in' indicates putting letters inside.
'meadow' becomes 'lea' (a lea is a grassy area).
'hiding in' indicates putting letters inside.
'grass' becomes 'pot' (cannabis).
'c' going within 'lea' is 'leca'.
'leca' placed within 'pot' is 'POLECAT'.
(Other definitions for polecat that I've seen before include "Smelly animal" , "Weasel-like creature" , "weaselly creature" , "weaselly type" , "American skunk" .)