名詞 aurora:

1. the first light of day
   同義詞：dawn, dawning, morning, first light, daybreak, break of day, break of the day, dayspring, sunrise, sunup, cockcrow
2. an atmospheric phenomenon consisting of bands of light caused by charged solar particles following the earth's magnetic lines of force
3. (Roman mythology) goddess of the dawn; counterpart of Greek Eos

au.ro.ra

n.（名詞）
Aurora borealis.
北極光
Aurora australis.
南極光
The dawn.
黎明

來源：
Middle English [dawn]
中古英語 [黎明]
from Latin aurôra * see aus-
源自 拉丁語 aurôra *參見 aus-

【引伸】
auro.ral 或
auro.rean
auro.rally
adv.（副詞）