A guy that has sex with fish inside a fish tank at the zoo. And ejaculates into the fishes gills and then pulls them over water so they breathe it out

n. The birth name of somebody who has changed their name. Most commonly attributed to trans people, but can be attributed to any person who has changed their name. (sometimes written as two words: dead name)

v. 1. To call somebody by their deadname.
v. 2. To out somebody's deadname to the public.