pron.
An unspecified or unknown person; someone. See Usage Note at he1.
n., pl., -ies.
A person of importance: "Obviously she was somebody-a real presence in the room" (Oleg Cassini).
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.