Dense locust group (5)
I believe the answer is:
swarm
(Other definitions for swarm that I've seen before include "Dense group (of insects)" , "Large crowd" , "Horde" , "Army" , "New colonists" .)
I believe the answer is:
swarm
(Other definitions for swarm that I've seen before include "Dense group (of insects)" , "Large crowd" , "Horde" , "Army" , "New colonists" .)