Arouse, as curiosity (5)
I believe the answer is:
pique
'arouse as curiosity' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for pique that I've seen before include "Stimulate (someone's interest)" , "score at cards" , "Show of annoyance" , "Nettle" , "nark" .)