Adrift
Black's Law Dictionary · Henry Campbell Black, M.A. · 1910
Black's Law Dictionary
Sea-weed, between high and low water-mark, which has not been deposited on the shore, and which during flood-tide is moved by each rising and receding wave, ls a drift, although the bottom of the mass may touch the beach.
Anthony v. Gifford, 2 Allen (Mass.) 549.