Search for a killer? (5)
I believe the answer is:
rifle
'search' is the definition.
(as in rifling around for something)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for rifle that I've seen before include "Ransack; a weapon" , "Ransack - firearm" , "Long-barrelled weapon, normal army equipment" , "Standard military gun fired from shoulder" , "Winchester" .)