Definition of "necro"

necro

verb
third-person singular simple present necroes or necros, present participle necroing, simple past and past participle necroed
1. (Internet) To make a new post to a forum discussion that has been dormant for a long time, making the thread visible in the list of active topics; to bump.
2. (Internet, video games and card games slang) To practice necromancy; to bring back from the dead.
  Quotations
  “I killed and necroed a couple guards practically every time I went out. My boys have the south gate manned, and they'll be stepping aside any minute now.”
  2018, Xavier P. Hunter, House Rules: a LitRPG novel‎, Magical Scrivener Press
noun
plural necroes or necros
1. (Internet, video game and card game slang) Necromancer.