Easton's Bible Dictionary (1897)
Rock of God, chief of the family of the Merarites (Num. 3:35) at the time of the Exodus.
Smith's Bible Dictionary (1863)
(my rock is God) son of Abihail, and chief of the Merarite Levites at the time of the exodus.
Hastings' Dictionary of the Bible (1898) & Schaff's Bible Dictionary
ZU'RIEL (my rock is God), a chief Levite in the time of the Exodus. Num 3:35.
Hitchcock's Bible Names (1869)
rock or strength of God