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Related to garboard: garboard plank
The first range or strake of planks laid next to a ship's keel.
[Obsolete Dutch gaarboord : possibly Dutch gaar, cooked, done (from Middle Dutch gaer) + Dutch boord, board (from Middle Dutch boort).]
(Nautical Terms) nautical the bottommost plank of a vessel's hull. Also called: garboard plank or garboard strake
[C17: from Dutch gaarboord, probably from Middle Dutch gaderen to gather + boord board]