a.din is a proper name used for a person or group identified in family lists and a name list.

The attested form is a proper name: it identifies a group called “the sons of Adin” in Ezra 2:15, Ezra 8:6, and Nehemiah 7:20, while Nehemiah 10:17 places the name within a list of names.

1. Proper name in family and name lists · dominant

   All four occurrences are tagged Noun · Proper. In Ezra 2:15 and Nehemiah 7:20, the APB renders clauses counting “The sons of Adin”; in Ezra 8:6 it introduces Ebed as being “from the sons of Adin,” while Nehemiah 10:17 places the name among a sequence of names.

   Ezra 2:15Ezra 8:6Nehemiah 10:17Nehemiah 7:20

In the Anselm Project Bible: The APB explicitly presents the name in the phrases “the sons of Adin” in Ezra 2:15, Ezra 8:6, and Nehemiah 7:20. In Nehemiah 10:17 it renders only a sequence of other names, so the term’s specific English presentation is unclear.