"auroras" in the noun sense
1. dawn, dawning, morning, aurora, first light, daybreak, break of day, break of the day, dayspring, sunrise, sunup, cockcrow
the first light of day
"we got up before dawn"
"they talked until morning"
2. aurora
an atmospheric phenomenon consisting of bands of light caused by charged solar particles following the earth's magnetic lines of force
3. Aurora
Roman mythology) goddess of the dawn counterpart of Greek Eos
Source: WordNet® (An amazing lexical database of English)
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