Girl I left in meadow (5)
I believe the answer is:
leila
'girl' is the definition.
'i left in meadow' is the wordplay.
'left' becomes 'l' (common abbreviation).
'in' indicates putting letters inside.
'meadow' becomes 'lea' (I've seen this before).
'i'+'l'='il'
'il' put into 'lea' is 'LEILA'.
(Other definitions for leila that I've seen before include "Eric Clapton song" , "Girl" , "Arab woman" .)