from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Judaism A seven-day period of formal mourning observed after the funeral of a close relative.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. a weeklong period of formal mourning for a close relative
Yiddish shive, from Hebrew šib'â, seven; see šbʿ in Semitic roots.(American Heritage® Dictionary of the English Language, Fourth Edition)
Hebrew ("seven") (Wiktionary)