day(-spring), early, light, morning, whence riseth

Boyd’s Bible Dictionary:

Dawn (Job 38:12; Luke 1:78).

Concise Bible Dictionary:

The word is from “to arise up” (Luke 1:78). It is elsewhere translated “east” because it is in the east that the sun rises. Christ is here compared to the spring of day from on high, as the true heavenly light, “to give light to them that sit in darkness and in the shadow of death, to guide our feet into the way of peace.”

Strong’s Dictionary of Hebrew Words:

Transliteration:
shachar
Phonic:
shakh’-ar
Meaning:
from 7836; dawn (literal, figurative or adverbial)
KJV Usage:
day(-spring), early, light, morning, whence riseth