sally port
Noun
Meaning
An opening into or entry to a fortification, usually arched, to enable a sally; a postern.
An entryway controlled by two doors or gates, each of which must be closed before the other can open.
Source: en.wiktionary.orgNoun
An opening into or entry to a fortification, usually arched, to enable a sally; a postern.
An entryway controlled by two doors or gates, each of which must be closed before the other can open.
Source: en.wiktionary.org