Leaves note with answer (3)
I believe the answer is:
tea
'leaves' is the definition.
(I've seen this before)
'note with answer' is the wordplay.
'note' becomes 'te' (musical note).
'with' is a charade indicator (letters next to each other).
'answer' becomes 'a' (abbreviation eg in Q and A).
'te'+'a'='TEA'
(Other definitions for tea that I've seen before include "Strangely, ate this drink" , "Hot drink" , "Hot beverage" , "tips for the cup?" , "Plant" .)