Crossword Genius

Sleep in small wood (7)

Ross

I believe the answer is:

slumber

I'm a little stuck... Click here to teach me more about this clue!

'sleep' is the definition.
(I know that sleep can be written as slumber)

'in small wood' is the wordplay.
'in small' becomes 's' (abbreviation - e.g. clothes size. I am not sure about the 'in' bit.).
'wood' becomes 'lumber' (I've seen this before).
's'+'lumber'='SLUMBER'

Can you help me to learn more?

(Other definitions for slumber that I've seen before include "Drop off" , "Doze" , "nap" , "Rumbles (anag.)" , "repose" .)

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