Stick cut off sweet (7)
I believe the answer is:
gumdrop
'sweet' is the definition.
(gumdrop is a kind of sweet)
'stick cut off' is the wordplay.
'stick' becomes 'gum' (gum can mean to glue or stick).
'cut off' becomes 'drop' (dropping is a kind of cutting. I am not sure about the 'off' bit.).
'gum'+'drop'='GUMDROP'
Can you help me to learn more?
(Other definitions for gumdrop that I've seen before include "It may be sucked" , "Small sweet (goody goody!)" , "Type of jelly sweet" , "Fungus attacking wood" , "chew" .)