Abarim Publications' online Biblical Hebrew Dictionary
די
The Aramaic relative particle די (di) means 'which', 'that', or 'whom' and is the equivalent of the Hebrew אשר ('asher). This Aramaic word occurs all over Ezra and Daniel.
In Hebrew exists an identical word די (day), which has nothing to do with the Aramaic homomorph and means either 'enough' or 'me'.