1. The name usually used by non-musician/producer/techincal wizard Brian Eno. Sometimes capitalized as ENO and usually followed by "& Fripp."
2. An "instrument" that is also known as a mixing board as controlled by Brian Eno.
Any fat Emo person that can be seen most anywhere. Short for enormous. To be qualified as an Eno, one must be obese, fat, or all around chunky in full Emo attire.