leeboard

noun

1. (countable)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 […]”

   “Forward of the mizzenmast was an iron box in which the mainsheets worked, and to port and starboard were the leeboard winches, hand-worked.”

   “I lowered the starboard leeboard. I sent Kester up forward with the binoculars. 'Any buoy,' I told him, 'just yell and point.'”

2. (countable, uncommon, uncountable)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.”

   “[…] because the leeboard side could be easily unrigged to avoid damaging the rigging, while the starboard side would be required to safely navigate the vessel.”

   “Riek's berth was on the starboard side with two women, and mine was on the leeboard side with two men. One of the two men was a baron, […]”