Hypertext Webster Gateway: "porthole"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Porthole \Port"hole`\, n. (Naut.)
An embrasure in a ship's side. See 3d {Port}.
From WordNet (r) 1.7 (wn)
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}]
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