Found 2 items, similar to porthole.
English → English (WordNet) Definition: porthole porthole n 1: a window in a ship or airplane 2: an opening (in a wall or ship or armored vehicle) for firing through [syn: port, embrasure]
English → English (gcide) Definition: Porthole Porthole \Port"hole`\, n. (Naut.) An embrasure in a ship's side. See 3d Port. [1913 Webster]