Note, most poetry is crackers! (7)
I believe the answer is:
solvers
'crackers' is the definition.
I don't know anything about this answer so I can't judge whether this works.
'note most poetry' is the wordplay.
'note' becomes 'sol' (musical note as in do-re-mi-fa-sol-la-ti).
'most' means to remove the last letter.
'poetry' becomes 'verse' (synonyms).
'verse' with its last letter removed is 'vers'.
'sol'+'vers'='SOLVERS'
'is' is the link.
Can you help me to learn more?
(Another definition for solvers that I've seen is " Crackers!".)