Bustle can arouse (4)
I believe the answer is:
stir
I believe this is a triple definition!
'bustle' is the first definition.
('stir' can be a synonym of 'bustle')
'can' is the second definition.
(thesaurus)
'arouse' is the third definition.
(stirring is a kind of arousing)
(Other definitions for stir that I've seen before include "Ladies' underwear" , "Agitation - prison" , "Arouse (a memory)" , "Whisk, blend" , "created by an agitator?" .)