eruv
Concise Oxford English Dictionary © 2008 Oxford University Press:
eruv /ˈɛrʊv/
▶noun (pl. eruvim /ˈɛrʊvɪm/, eruvs) 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. ‘ērūḇ, from a base meaning ‘mixture’.
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