from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Slang Excellent; first-rate.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Excellent; outstanding.
- adj. Alternative spelling of bitching.
Alteration of bitching, from (son of a) bitch.(American Heritage® Dictionary of the English Language, Fourth Edition)
shortening of bitching (Wiktionary)