Danger -- quick to remove bishop (4)
I believe the answer is:
risk
'danger' is the definition.
(risk is a kind of danger)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for risk that I've seen before include "Element of uncertainty" , "Expose to danger" , "dangerous thing" , "Endanger, jeopardise" , "Gamble" .)