fortress of solitude 

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.

fortress of solitude by Abdallah February 4, 2006

Fortress of Solitude 

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.

I'll call you from the fortress of solitude, in a few minutes.

Fortress of Solitude by ratpak5 March 22, 2011

Fortress of solitude 

The wall of blankets you put around you on your twin size bed that you have against a wall that makes you feel warm and safe for once in your life

dude, I walked into Jeremy's room and thought someone was sleeping with him but it was just his (Fortress of solitude). Could imagine someone with him on that tiny ass twin?

Fortress of solitude by B,B,B,BIRD,BIRD,BIRD,THEBIRDIS June 15, 2018

Fortress of Solidude 

Where Superman hangs out with his homies.

Dude 1- Man I'm so beat!
Dude 2- Let's go hang with Superman in the Fortress of Solidude yo!
Dude 2- Sweet

Fortress of Solidude by Bowlesthepopsicle August 4, 2014