leeboard noun2 •A board, or frame of planks, lowered over the side of a sailboat to lessen its leeway.[…] on the port side a sofa bed was put up and fitted with a leeboard. On the starboard side a short seat with a folding cot above, which folded […] — 1909 •Port, larboard (the side of a ship opposite starboard).Even in complete reversals from starboard to leeboard in a high sea, no shocks, either electrical or mechanical, could be observed. — 1896 formsleeboards
