Harpoons (6)
I believe the answer is:
spears
'harpoons' is the definition.
('spear' can be a synonym of 'harpoon')
This is the entire clue.
(Other definitions for spears that I've seen before include "pop singer" , "asparagus perhaps" , "Pointed poles as weapons" , "Pointed stems of asparagus" , "Stems of asparagus as weapons" .)