Definition of wights:
(n) :
(archaic) A living creature, especially a human being.
(adj) :
(archaic, except in dialects) Brave, valorous, strong.
(adj) :
(UK dialectal, obsolete) Strong; stout; active.
(n) :
(poetic) A ghost, deity or other supernatural entity.
(n) :
(fantasy) A wraith-like creature.
(n) :
(Old Norse, Germanic paganism) A supernatural being, often used in compounds such as the land-vættr which guard the land, especially the four guardians of Iceland.