Gets jumpy when one searches for weapons? (6)
I believe the answer is:
'searches for weapons?' is the definition.
(I've seen this in another clue)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for frisks that I've seen before include "Searches manually as at security check", "Informally searches as for concealed weapons", "Searches, for concealed weapons or drugs, say", "Runs about happily or searches for concealed weapons", "Gambols and searches".)