The act of spamming, whether it be on forums or through e-mail

spaminal spam-i-nal n. word combo of spam-animal, a little square animal that has yet to be photographed and is rumored to exist, a fleshy organism that tastes good fried, a mythical rectangular rodent of the kingdom Animalia,that when the extremities are removed, fits perfectly into a cube shaped can, white trash food source.

To terminate spam.

When a legitimate email gets erroneously considered spam and is rejected, deleted, routed to spam/trash, or otherwise treated in such a way that it is not seen by the recipient.