מהמרה mahămôrâh mah-ham-o-raw' From an unused root of uncertain meaning; perhaps an abyssKJV Usage: deep pit.
Brown-Driver-Briggs' Hebrew DefinitionsBDB2202 מהמרה 1. a flood, a pit of water, watery pit Origin: from an unused root of uncertain meaning TWOT: 509a Parts of Speech: Noun Feminine