SUNUP
dawn, dawning, morning, aurora, first light, daybreak, break of day, break of the day, dayspring, sunrise, sunup, cockcrow
(noun) the first light of day; “we got up before dawn”; “they talked until morning”
Source: WordNet® 3.1
Etymology
Noun
sunup (countable and uncountable, plural sunups)
(US) The time of day when the sun appears above the eastern horizon.
(US) The change in color of the sky at sunup.
Synonyms
• (time of day): dawn, daybreak, sunrise; see also dawn
Anagrams
• upsun
Source: Wiktionary
Sun"up`, n.
Definition: Sunrise. [Local, U.S.]
Such a horse as that might get over a good deal of ground atwixt
sunup and sundown. Cooper.
Source: Webster’s Unabridged Dictionary 1913 Edition