postern /posˈtərn or pōˈstərn/

1. A back door or gate
2. A small private door
3. A sallyport (qv under sally¹)

1. (of a door, gate, etc) back
2. Private

• quarter-miler
• quarter-milers
• quartermistress
• quartern
• quartern loaf
• quartern loaves
• quarter note
• quarter notes
• quarterns
• quarteroon
• quarteroons
• quarter past
• quarter-plate
• quarter-pound
• quarter-pounder
• quarter-pounders
• quarter-rail
• quarter-rails
• quarter-repeating
• quarter-road
• quarter-roads
• quarter-round
• quarter-rounds
• quarters
• quarter-saw