sinkhole

A hole formed in soluble rock by the action of water, serving to conduct surface water to an underground passage.

A depressed area in which waste or drainage collects.

An attack which redirects requests, whether network or memory accesses, to a new location defined by the attacker.

(Internet) A domain name server that has been configured to hand out non-routeable addresses for all domains, so that every computer that uses it will fail to get access to the real website.

A hole in the playfield that rewards the player when the ball is guided into it.

(Internet) To configure as a sinkhole (domain name server that gives non-routeable addresses).