Rampant racism, it's a weapon (8)
I believe the answer is:
scimitar
'a weapon' is the definition.
(scimitar is a kind of weapon)
'rampant racism it's' is the wordplay.
'rampant' indicates anagramming the letters (I've seen this in other clues).
'racism'+'it'='racismit'
'racismit' is an anagram of 'SCIMITAR'.
(Other definitions for scimitar that I've seen before include "This cut" , "I'm racist, owning an oriental sword" , "Curved oriental sabre" , "Sword with curved blade used by the Turks and Persians" , "Curved form of sword" .)