He put grouse with carp, rook, duck and snag (5)
I believe the answer is:
roget
'he put grouse with carp' is the definition.
The definition suggests a singular noun which matches the answer.
'rook duck and snag' is the wordplay.
'rook' becomes 'R' (chess abbreviation).
'duck' becomes 'o' (resembles zero - 'duck' in cricket).
'and' is a charade indicator (letters next to each other).
'snag' becomes 'get' (I've seen this in another clue).
'r'+'o'+'get'='ROGET'
Can you help me to learn more?
(Other definitions for roget that I've seen before include "Thesaurus inventor" , "Thesaurus creator" , "Thesaurus writer" , "Thesaurus constructor" , "English doctor, compiler of a thesaurus, d. 1869" .)