Found 2 items, similar to Deadlight.
English → English (WordNet) Definition: deadlight deadlight n : a strong shutter over a ship's porthole that is closed in stormy weather
English → English (gcide) Definition: Deadlight Deadlight \Dead"light`\, n. (Naut.) A strong shutter, made to fit open ports and keep out water in a storm. [1913 Webster]