noun

• (archaic, UK) A corpse or dead body.
  "[…] and that, as the chronicle states, a lich-way would be made through then, assembled his servants, and attempted to stop its progress as it was carried over a bridge. A scuffle ensued, and the body was thrown into the water. The lich-way as not made ; but the Bishop of Exeter amply revenged himself for the proceedings."
• (fantasy, roleplaying games) A reanimated corpse or undead being; particularly an intelligent, undead spellcaster.
  "It was a lich’s face – desiccated flesh tight over its skull."

adj

• (obsolete) Like; resembling; equal.
  "1386-90, John Gower, Confessio Amantis. Anon he let two cofres make / Of one semblance, and of one make, / So lich, that no lif thilke throwe, / That one may fro that other knowe."

name

• (astronomy) A neutron star in Milky Way Galaxy, Virgo constellation; The first star, a pulsar, at which exoplanets were discovered.