Hat left in shady place (6)
I believe the answer is:
bowler
'hat' is the definition.
(I know that bowler is a type of hat)
'left in shady place' is the wordplay.
'left' becomes 'l' (common abbreviation).
'in' means one lot of letters goes inside another.
'shady place' becomes 'bower' (I've seen this before).
'l' inserted within 'bower' is 'BOWLER'.
(Other definitions for bowler that I've seen before include "Hat that is round and hard with a narrow brim" , "something more substantial than a cap" , "Hard hat for cricketer?" , "Hard hat for cricket thrower" , "Cricketer and round hat" .)