1.(n) A type of house. Usually found in picturesque locales, such as lakeshores, seashores,
the Hamptons, so on. But that's not what you came here to hear about.
2.(n) A public restroom, such as the ones one might find in a public park. These are so named because of their house-like exterior. Use in this context is widely restricted to Europe.
3.(v) The act of anonymously meeting up with a member of the same sex at a public restroom ("
cottage" - see above), with the intent of
gettin' down n' dirty with them within.
Example:
1. Every rich person owns a
cottage.
2. I must be getting to a cottage, or I'll soil my knickers!
3. Did you see that guy in
the skinny jeans standing by the door of the bathroom? He is so
cottaging.