Top definition
A recently discovered planetoid outside Pluto in our solar system.
What do you know, I can see Setna, or is it a smuge on my telescope lense?
by regs_ October 28, 2004
Mug icon

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug