Strong's #4785: Marah (pronounced maw-raw')

the same as 4751 feminine; bitter; Marah, a place in the Desert:--Marah.

Brown-Driver-Briggs Hebrew Lexicon:

mârâh

Marah = "bitter"

1) the spring with bitter water which was 3 days travel from the crossing place of the Red Sea in the peninsula of Sinai

Part of Speech: noun proper feminine

Relation: the same as H4751

Usage:

This word is used 5 times:

 

Exodus 15:23: "And when they came to Marah, they could not drink of the waters of Marah,"
Exodus 15:23: "not drink of the waters of Marah, for they were bitter:"
Exodus 15:23: "were bitter: therefore the name of it was called Marah."
Numbers 33:8: "journey in the wilderness of Etham, and pitched in Marah."
Numbers 33:9: "And they removed from Marah, and came unto Elim: and in Elim were twelve"