Top definition
The place that serves as a base for superman. It was first seen in superman #17 on the borders of metropolis, however it is now usually thought to be located in antartica.
Superman keeps all his discoveries, artifacts, and inventions in his fortress of solitude.
by Abdallah February 03, 2006
Mug icon

The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

Buy the shirt
2
1. The place that serves as a base for superman. It was first seen in superman #17 on the borders of metropolis, however it is now usually thought to be located in antartica.

2. The bathroom at work, in it's solitude, you can have a few minutes of peace and quiet.
by ratpak5 March 07, 2011
Mug icon

The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

Buy the shirt