necro in English dictionary necro Meanings and definitions of "necro" noun (Internet, video game and card game slang) Necromancer. verb (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. verb (Internet, video game and card game slang) To practice necromancy; to bring back from the dead. more Grammar and declension of necro necro (plural necroes or necros) necro (third-person singular simple present necroes or necros, present participle necroing, simple past and past participle necroed) more Necro Sample sentences with "necro" Declension Stem Try again Available translations Bulgarian Dutch French German Hebrew Polish Spanish Swedish Authors