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

• two-year-old
• two-year-olds
• twp
• twy-
• twyer
• twyere
• twyeres
• twyers
• twyfold
• twyforked
• twyformed
• twy-natured
• TX
• Tyburn
• Tyburn-ticket
• Tyburn-tippet
• Tyburn-tree
• Tyche
• tychism
• tychisms
• Tychonic
• tycoon
• tycoonate
• tycoonates
• tycooneries