Search for weapons (5)
I believe the answer is:
frisk
'search for weapons' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for frisk that I've seen before include "body check" , "Skip playfully, frolic" , "Search for concealed weaponry" , "Body search for concealed weapons or drugs" , "Frolic - search for weapons" .)