Wet cloth covers two inches (7)
I believe the answer is:
raining
'wet cloth covers two inches' is the definition.
I can't judge whether this definition defines the answer.
'cloth covers two inches' is the wordplay.
'two inches' means two replacements for 'inch'.
'cloth' becomes 'rag' (rag is a kind of cloth).
'covers' indicates putting letters inside.
'inch' becomes 'in' (abbreviation).
'inch' becomes 'in' (abbreviation).
'in'+'in'='inin'
'rag' enclosing 'inin' is 'RAINING'.
Can you help me to learn more?
(Other definitions for raining that I've seen before include "With water falling from the sky" , "Showering" , "Depositing cats and dogs" , "Showery" , "Falling in drops" .)