What does postern mean?
A postern is a back door or gate, especially one belonging to a castle, fortified wall, large estate, or old building. Unlike an ordinary entrance, it is usually secondary to the main doorway and may be narrow, concealed, or guarded. The word can also suggest an indirect route into a place, organization, or sphere of influence: a social connection may metaphorically serve as a postern. In contemporary English, postern is most often encountered in historical, architectural, and literary contexts. It is related to the Latin word for “behind” or “after,” the source of English words such as posterior, posterity, and posthumous. Although largely replaced by the plainer “back door” or “back gate,” postern preserves the atmosphere of secrecy, controlled access, and historical architecture associated with the entrance it names.
A back door or gate, especially in a building, castle, or fortified wall.
"The postern was opened only after the guards had identified the traveler."
Chiefly used in architectural, historical, and literary contexts.
An indirect or secondary means of gaining access or making an escape.
"He hoped that a quiet introduction would serve as a postern to the ministry."
A literary and relatively uncommon figurative sense.
The plural is used when referring to multiple rear gates or secondary entrances.
"Several posterns offered discreet access to the walled town."
A postern was the discreet way in—a small back gate that often offered a controlled alternative to the imposing main entrance.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does postern come from?
The word entered Middle English from Anglo-French posterne, which derived from a Medieval Latin form meaning “a rear gate.” That form was based on the Latin post, meaning “after” or “behind.” The same Latin root also underlies words including posterior, posterity, and posthumous.
How postern is actually used
The word is chiefly literary, historical, or architectural. Its figurative sense is uncommon but established.
Easily confused with postern
A postern is a back gate or door, whereas the posterior refers to something at the back of the body or to a later period.