from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Slang A full colonel.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A member of the U. S. armed forces having the rank of full colonel, as distinct from a lieutenant colonel.
From the eagle of the insignia.(American Heritage® Dictionary of the English Language, Fourth Edition)
From the insignia of rank, which bears a depiction of an eagle. (Wiktionary)