GUNWALE

n. upper part of a boat (Nautical)

The gunwale, (IPA  /gʌnəl/ ) pronounced "gunnel" to rhyme with "tunnel", is a nautical term describing the top edge of the side of a boat. Wale is the same word as the skin injury, a weal, which, too, forms a ridge. Originally the gunwale was the "Gun ridge" on a sailing warship. This represented the strengthening wale or structural band added to the design of the ship, at and above the level of a gun deck. It was designed to accommodate the stresses imposed by the use of artillery.
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Noun
1. wale at the top of the side of boat; topmost planking of a wooden vessel
(synonym) gunnel, gun rest
(hypernym) wale, strake

(n.)
The upper edge of a vessel's or boat's side; the uppermost wale of a ship (not including the bulwarks); or that piece of timber which reaches on either side from the quarter-deck to the forecastle, being the uppermost bend, which finishes the upper works of the hull.
  

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