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Black's Law Dictionary · Henry Campbell Black, M.A. · 1910
Black's Law Dictionary
A thread of water; a line of water; the middle line of a stream;of water, supposed to divide it into two equal parts, and constituting in many cases the boundary between the riparian proprietors on each side.
Ingraham v. Wilkinson, 4 Pick. (Mass.) 273, 16 Am. Dec. 342.