Strong's #3722: orthros (pronounced or'-thros)
from the same as 3735; dawn (as sun-rise, rising of light); by extension, morn:--early in the morning.
Thayer's Greek Lexicon:
̓́
orthros
1) daybreak, dawn
2) at early dawn, at daybreak, early in the morning
Part of Speech: noun masculine
Relation: from the same as G3735
Usage:
This word is used 3 times:
Luke 24:1: "first day of the week, very early in the morning, they came unto the"
John 8:2: "And early in the morning he came again into the temple, and"
Acts 5:21: "into the temple early in the morning, and taught. But"