High sturdy walls the usual support for a window cleaner? (6,3)
I believe the answer is:
strung out
'the usual support for a window cleaner?' is the definition.
I can't judge whether this definition defines the answer.
'high sturdy walls' is the wordplay.
'high' becomes 'rung' (I can't explain this - if you can you should believe this answer much more).
'sturdy' becomes 'stout' ('stout' can be a synonym of 'sturdy').
'walls' is an insertion indicator (to 'wall' can mean to contain).
'rung' put inside 'stout' is 'STRUNG-OUT'.
Can you help me to learn more?
(Other definitions for strung out that I've seen before include "on drugs" , "weak as a result of drug addiction" , "Keep well apart" , "Exhausted" , "prolonged" .)