Pronunciation: (pôrt'hōl", pōrt'-), [key]
1. a round, windowlike opening with a hinged, watertight glass cover in the side of a vessel for admitting air and light. Cf. port 4 (def. 1).
2. an opening in a wall, door, etc., as one through which to shoot.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.