Harpoon or lance (5)
I believe the answer is:
spear
This clue is a double definition.
'harpoon' is the first definition.
(synonyms)
'lance' is the second definition.
(I know that lance can be written as spear)
(Other definitions for spear that I've seen before include "Primitive weapon" , "A bit of asparagus" , "asparagus for example" , "Thrown weapon" , "Javelin or harpoon" .)