Break in using crowbar? That's ingenious! (12)
I believe the answer is:
enterprising
'ingenious' is the definition.
(both can mean resourceful or smart)
'break in using crowbar?' is the wordplay.
'break in' becomes 'enter' (I've seen this before).
'using crowbar?' becomes 'prising' (you might prise open a door with a crowbar).
'enter'+'prising'='ENTERPRISING'
'that's' acts as a link.
(Other definitions for enterprising that I've seen before include "Go ahead" , "daring" , "Venturesome" , "Adventurous and imaginative" , "Go-getting" .)