noun obsolete A dead body; a corpse. noun (Zoöl.)

What does lich mean slang?

: a dead body : corpse —used chiefly in combination lich-house.

What does it mean to lich someone?

In fantasy fiction, a lich (/ˈlɪtʃ/; from the Old English līċ, meaning "corpse") is a type of undead creature. ... Often such a creature is the result of a wilful transformation, as a powerful wizard skilled in necromancy who seeks eternal life uses rare substances in a magical ritual to become undead.