Strong's #7225: re'shiyth (pronounced ray-sheeth')
from the same as 7218; the first, in place, time, order or rank (specifically, a firstfruit):--beginning, chief(-est), first(-fruits, part, time), principal thing.
Brown-Driver-Briggs Hebrew Lexicon:
ׁ
rê'shı̂yth
1) first, beginning, best, chief
1a) beginning
1b) first
1c) chief
1d) choice part
Part of Speech: noun feminine
Relation: from the same as H7218
Usage:
This word is used 51 times:
Micah 1:13: "the chariot to the swift beast: she is the beginning of the sin to the daughter of Zion: for"