Give a little brushing with oil, and cook (5)
I believe the answer is:
broil
'cook' is the definition.
(I know that broil is a more specific form of the action grill)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for broil that I've seen before include "Maybe grill" , "Be extremely hot" , "cook?" , "disturbance" , "stew" .)