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

• ohmically
• ohmmeter
• ohmmeters
• ohms
• OHMS
• Ohm's law
• oho
• -oholic
• -oholism
• ohone
• OHP
• OHS
• oi
• -oid
• -oidal
• -oidally
• oidia
• oidium
• oik
• oikist
• oikists
• oiks
• oil
• oil bath
• oil baths