aurora

(noun) the first light of day. Synonyms: dawn, dawning, morning, first light, daybreak, break of day, break of the day, dayspring, sunrise, sunup, cockcrow. Examples: "We got up before dawn." "They talked until morning."

(noun) an atmospheric phenomenon consisting of bands of light caused by charged solar particles following the earth's magnetic lines of force.

(noun) (Roman mythology) goddess of the dawn; counterpart of Greek Eos. Synonyms: Aurora.