from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Slang An important, often overbearing person.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A person in a position of power, authority, or status.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. an important or influential (and often overbearing) person
From Chinook Jargon hayo makamak, plenty to eat.(American Heritage® Dictionary of the English Language, Fourth Edition)
See muckety muck. (Wiktionary)