Flock, herd (5)
I believe the answer is:
drove
I believe this clue is a double definition.
'flock' is the first definition.
(I have seen 'Flock of animals' mean 'drove' so perhaps 'flock' could also mean 'drove')
'herd' is the second definition.
(I've seen this in another clue)
(Other definitions for drove that I've seen before include "Moving crowd" , "Motivated" , "Took car; herd animals" , "Incited" , "Urged, flock on the move" .)