Meaning

verb to come to rest, settle

verb come down

adjective lighted up by or as by fire or flame

originThe verb is probably derived partly: * from Middle English alighten (“to kindle, light, set on fire; to begin burning; to become bright, shine; to arouse, rouse, stir; (figuratively) to enlighten spiritually, illuminate”) [and other forms], from Old English ālīhtan, ālȳhtan (“to light up; enlighten”) (perhaps modelled after Latin illūmināre, the present active infinitive of illūminō (“to…

Etymology from Wiktionary, CC BY-SA 3.0