Stick raised for attack (3)
I believe the answer is:
mug
'for attack' is the definition.
(to mug someone is to attack and rob them)
'stick raised' is the wordplay.
'stick' becomes 'gum' (gum can mean to glue or stick).
'raised' is a reversal indicator (going up in a down clue).
'gum' in reverse letter order is 'MUG'.
(Other definitions for mug that I've seen before include "Drinking vessel or foolish fellow" , "Drinking vessel; dupe" , "One easily duped" , "person's face" , "Gullible type; drinking vessel" .)