Bible Dictionaries
Postern

Webster's Dictionary

(1):

(n.) A subterraneous passage communicating between the parade and the main ditch, or between the ditches and the interior of the outworks.

(2):

(n.) Originally, a back door or gate; a private entrance; hence, any small door or gate.

(3):

(a.) Back; being behind; private.

Bibliography Information
Webster, Noah. Entry for 'Postern'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​p/postern.html. 1828.