from The American Heritage® Dictionary of the English Language, 4th Edition
- n.pl. Informal Twenty-five cents.
- n.pl. Slang A petty sum.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Twenty-five cents, or a quarter.
based on the old monetary bit, which was one eighth of an old Spanish dollar (or 12½ cents in more modern usage) (Wiktionary)