from The American Heritage® Dictionary of the English Language, 4th Edition
- n. One of a pair of movable boards or plates attached to the hull of a sailing vessel to reduce downwind drift.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A board, or frame of planks, lowered over the side of a sailboat to lessen its leeway.
from the GNU version of the Collaborative International Dictionary of English
- n. A board, or frame of planks, lowered over the side of a vessel to lessen her leeway when closehauled, by giving her greater draught.
from The Century Dictionary and Cyclopedia
- n. One of two long flat pieces of wood attached one on each side of a flat-bottomed vessel (as a Dutch galiot) by a bolt on which it traverses.
Sorry, no etymologies found.