A special case for sheltered side being out like a light (6)
I believe the answer is:
asleep
'out like a light' is the definition.
I can't tell whether this defines the answer.
'a special case for sheltered side' is the wordplay.
'special' becomes 'sp'.
'case for' indicates putting letters inside.
'sheltered side' becomes 'lee' (as in lee side, the side sheltered from wind).
'sp' going around 'lee' is 'sleep'.
'a'+'sleep'='ASLEEP'
'being' acts as a link.
Can you help me to learn more?
(Other definitions for asleep that I've seen before include "In slumber" , "in bed?" , "like a kipper" , "Having nodded off" , "Dead to the world" .)