The incorrect spelling of the word stellar, or the last name of Georg Wilhelm, a German botanist and zoologist who had an eagle, jay, and sea lion (to name a few) named after him.
The last name of some seriously awesome people. Steller can also be a common misspelling of the word "Stellar" which means awesome or anything about space.
"The Stellers are all seriously awesome"
"It'sspelt "Stellar" not "Steller""