An eruv ([(ʔ)eˈʁuv]; Hebrew: עירוב, lit. 'mixture', also transliterated as eiruv or erub, plural: eruvin [(ʔ)eʁuˈvin] or eruvim) is a ritual halakhic enclosure made for the purpose of allowing activities which are normally prohibited on Shabbat (due to the prohibition of hotzaah mereshut lereshut), specifically: carrying objects from a private domain to a semi-public domain (carmelit), and transporting objects four cubits or more within a semi-public domain. The enclosure is made within some Jewish communities, especially Orthodox Jewish communities.