'Postern' definitions:

Definition of 'postern'

From: WordNet
noun
A small gate in the rear of a fort or castle

Definition of 'Postern'

From: GCIDE
  • Postern \Pos"tern\, a. Back; being behind; private. "The postern door." --Dryden. [1913 Webster]

Definition of 'Postern'

From: GCIDE
  • Postern \Pos"tern\, n. [OF. posterne, posterle, F. poterne, fr. L. posterula, fr. posterus coming after. See Posterior.]
  • 1. Originally, a back door or gate; a private entrance; hence, any small door or gate. [1913 Webster]
  • He by a privy postern took his flight. --Spenser. [1913 Webster]
  • Out at the postern, by the abbey wall. --Shak. [1913 Webster]
  • 2. (Fort.) A subterraneous passage communicating between the parade and the main ditch, or between the ditches and the interior of the outworks. --Mahan. [1913 Webster]