Source : Webster's Revised Unabridged Dictionary (1913)

Dayspring \Day"spring`\ (d[=a]"spr[i^]ng`), n.
   The beginning of the day, or first appearance of light; the
   dawn; hence, the beginning. --Milton.

         The tender mercy of our God; whereby the dayspring from
         on high hath visited us.                 --Luke i. 78.

Source : WordNet®

dayspring
     n : the first light of day; "we got up before dawn"; "they
         talked until morning" [syn: {dawn}, {dawning}, {morning},
          {aurora}, {first light}, {daybreak}, {break of day}, {break
         of the day}, {sunrise}, {sunup}, {cockcrow}] [ant: {sunset}]