"Stellar" Natural Recordings by Native Speakers
Adjective: relating to the stars or the universe; extremely good or excellent.
Example: The band had a stellar performance at the concert.
The Steinway & Sons is a well-known American piano manufacturer renowned for producing high-quality pianos.
A stone or monument, typically bearing an inscription, erected as a memorial or to commemorate a person, event, or place.
I couldn't find any information on the word "stellerid." It's possible that it's a misspelling or a made-up word.