[ 'ɛrʊv ]
■ noun ( plural ~im 'ɛrʊvɪm , ~s ) Judaism an enclosed urban area in which activities normally forbidden in public on the Sabbath are allowed to take place (the boundary wire symbolically extending the private domain of a Jewish household).
Origin
from Heb. ῾ērū ḇ , from a base meaning 'mixture'.