teergrube

teergrube
 /teer'groob.@/, n.

   [German for tar pit] A trap set to punish spammers who use an {address
   harvester}; a mail server deliberately set up to be really, really
   slow. To activate it, scatter addresses that look like users on the
   teergrube's host in places where the address harvester will be
   trolling (one popular way is to embed the fake address in a Usenet sig
   block next to a human-readable warning not to send mail to it). The
   address harvester will dutifully collect the address. When the spammer
   tries to mailbomb it, his mailer will get stuck.