from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Slang A person regarded as clumsy, stupid, or unattractive.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A person who is socially awkward, unattractive, clumsy, or oafish.
Yiddish, from Polish żłób, trough, blockhead.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Yiddish זשלאָב (zhlob). Compare Russian жлоб. (Wiktionary)