A person or thing that causes a flood or excessive flow of water. The heavy rains turned the small stream into a flooder, inundating the nearby fields.
A device or mechanism designed to release or control a large amount of water. The flooder was activated to manage the overflow from the dam.
In computing, a program or script that sends a large number of messages or requests to a server, often with the intent to overwhelm it. The server was temporarily shut down due to a flooder attack that sent thousands of requests per second.