Point and slash sword (4)
I believe the answer is:
epee
'sword' is the definition.
(epee is a kind of sword)
'point and slash' is the wordplay.
'point' becomes 'E' (E is an example).
'and' says to put letters next to each other.
'slash' becomes 'pee' (both can informally mean to urinate).
'e'+'pee'='EPEE'
(Other definitions for epee that I've seen before include "Thin fencing sword" , "Pointed weapon" , "Narrow fencing sword" , "Fencing weapon" , "Fencer's sword" .)