Advanced laundry detergent assuming red playing surface? (9)
I believe the answer is:
astroturf
'playing surface?' is the definition.
'astroturf' can be an answer for 'surface?' (artificial grass surface). I am not sure about the 'playing' bit.
'advanced laundry detergent assuming red' is the wordplay.
'advanced' becomes 'a' (abbreviation).
'laundry detergent' becomes 'surf' (I can't explain this - if you can you should give a lot more credence to this answer).
'assuming' means one lot of letters goes inside another (inserted letters are taken in or assumed).
'red' becomes 'trot' (Trotskyite, type of socialist or 'red').
'surf' placed around 'trot' is 'stroturf'.
'a'+'stroturf'='ASTROTURF'
Can you help me to learn more?
(Other definitions for astroturf that I've seen before include "Artificial grass" , "play area possibly" , "substitute on pitch?" .)