deadlight(redirected from Deadlights)
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a. A strong shutter or plate fastened over a ship's porthole or cabin window in stormy weather.
b. A thick window set in a ship's side or deck.
2. A skylight constructed so that it cannot be opened.
1. (Nautical Terms) nautical
a. a bull's-eye let into the deck or hull of a vessel to admit light to a cabin
b. a shutter of wood or metal for sealing off a porthole or cabin window
2. (Architecture) a skylight designed not to be opened
1. a strong shutter for the interior of a porthole in heavy weather.
2. a thick pane of glass set in a ship's hull or deck to admit light.