Look daggers as cultivator swapped hands (6)
I believe the answer is:
glower
'look daggers' is the definition.
(I've seen this in another clue)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for glower that I've seen before include "Frown" , "burning ember, say?" , "Look hard and angrily" , "Threatening look" , "shiner?" .)