(bitterness), a place which lay in the wilderness of Shur or Etham, three days journey distant, (Exodus 15:23; Numbers 33:8) from the place at which the Israelites crossed the Red Sea, and where was a spring of bitter water, sweetened subsequently by the casting in of a tree which "the Lord showed" to Moses. Howarah, distant 16 1/2 hours (47 miles) from Ayoun Mousa, the Israelites' first encampment, has been by many identified with it, apparently because it is the bitterest water in the neighborhood.
MARAH
Meaning of MARAH in English
Smith's Bible English dictionary. Английский библейский словарь Смита. 2012