The robber-barons of the 19th century amassed great wealth through exploitative business practices.

The robber fly is known for its predatory behavior and ability to catch other insects mid-air.

Robber flies are known for their predatory behavior.

The robbers stole all the steaks from the restaurant.

Robber gulls are known for their aggressive behavior and scavenging habits.

I saw a robber gull at the beach.

I ordered a delicious robber steak at the restaurant.