Marxist lark, possibly? (4)
I believe the answer is:
karl
'marxist' is the definition.
Both the definition and answer are singular nouns.
Perhaps there's a link between them I don't understand?
'lark possibly?' is the wordplay.
'possibly?' indicates an anagram (I've seen 'possibly' mean this).
'lark' with letters rearranged gives 'KARL'.
Can you help me to learn more?
(Other definitions for karl that I've seen before include "Founder of communism, . . . . Heinrich Marx" , "-- Marx, socialist" .)