from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A U.S. silver coin worth 50 cents.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A coin worth one half of a dollar.
from The Century Dictionary and Cyclopedia
- n. A silver coin of the United States, of the value of 50 cents.
half- + dollar (Wiktionary)