What is the meaning of Lich?

A corpse or dead body.

A reanimated corpse or undead being; particularly an intelligent, undead spellcaster.

(Can we verify this sense?) Ellipsis of lichfield.

(Can we verify this sense?) Ellipsis of lichgate.

(Can we verify this sense?) Ellipsis of lichway.

Like; resembling; equal.

A body.

genitive plural of licha

genitive plural of licho

Source: wiktionary.org