Sallyport

Part of speech: noun

Definitions

1. A secure gateway designed to enable controlled entry and exit from a fortified area while providing safety against potential threats
2. An access point within a defensive installation that allows for selective movement in and out while maintaining security
3. A passageway in a fortification that permits regulated movement with protective measures against attack

Etymology: Sallyport is a compound of "sally" and "port," and the two halves tell the story. "Sally" comes from the Old French "saillie," the past participle form of "saillir" ("to leap" or "to rush out"), so a sally was originally a sudden rush of attackers bursting out of a besieged place. "Port" here means a gate or opening, the same sense found in the older English "port" for a city gateway, and it is related to the Latin "porta." Put together, a sallyport is literally a gate through which defenders could dash out to strike at besiegers and then retreat back inside. Fortress builders designed these passages to be controlled exits, so a garrison could move people and troops in and out without opening the main gate and exposing the whole fortification. The word has stayed attached to that military purpose ever since.

Synonyms: gateway, entrance