Strong's #2063: eruthros (pronounced er-oo-thros')

of uncertain affinity; red, i.e. (with 2281) the Red Sea:--red.

Thayer's Greek Lexicon:

̓́

eruthros

1) the Red Sea

1a) the Indian Ocean washing the shores of Arabia and Persia, with its two gulfs, of which the one on the east is called the Persian Gulf, the other on the opposite side the Arabian. In the NT the phrase denotes the upper part of the Arabian Gulf (the Heropolitie Gulf, so called [i.e. the Gulf of Suez]), through which the Israelites made their passage out of Egypt to the shore of Arabia.

Part of Speech: adjective

Relation: of uncertain affinity

Usage:

This word is used 2 times:

 

Acts 7:36: "the land of Egypt, and in the Red sea, and in"
Hebrews 11:29: "By faith they passed through the Red sea as by dry"