dayspring

From Middle English dai spring, equivalent to day +‎ spring.

dayspring (plural daysprings)

1. (archaic) The beginning of the day, or first appearance of light; the dawn; daybreak.
   • 1900, The Holy Bible, […] (American Standard Version), New York: Thomas Nelson & Sons, Luke 1:78:

     Because of the tender mercy of our God, Whereby the dayspring from on high shall visit us

   • 1901, The Holy Bible, […] (American Standard Version), New York: Thomas Nelson & Sons, Job 38:12:

     Hast thou commanded the morning since thy days began, And caused the dayspring to know its place

• break of day, daybreak, sunup; see also Thesaurus:dawn

• Noah Webster (1828) “dayspring”, in An American Dictionary of the English Language: […], volume I (A–I), New York, N.Y.: […] S. Converse; printed by Hezekiah Howe […], →OCLC.
• “dayspring”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.