from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A gate in a fortification designed for sorties.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A small door in a fort or a castle to enable a sally; a postern.
- n. An entryway controlled by two doors or gates, of which each must be closed before the other can open.
from the GNU version of the Collaborative International Dictionary of English
- n. A large port on each quarter of a fireship, for the escape of the men into boats when the train is fired; a large port in an old-fashioned three-decker or a large modern ironclad.
from The Century Dictionary and Cyclopedia
- n. In fortification, a gate or a passage to afford free egress to troops in making a sally.
- n. A large port on each quarter of a fire-ship, for the escape of the crew into boats when the train is fired.
Sorry, no etymologies found.