Put a wreath on a river in the country (9)
I believe the answer is:
engarland
'put a wreath on' is the definition.
I can't tell whether this defines the answer.
'a river in the country' is the wordplay.
'river' becomes 'r' (abbreviation).
'in the' means one lot of letters goes inside another.
'country' becomes 'england' (England is an example).
'a'+'r'='ar'
'ar' inserted inside 'england' is 'ENGARLAND'.
Can you help me to learn more?
(Other definitions for engarland that I've seen before include "Drape flowers round" , "Hang around with prize" .)