Sash worn by ancient Jewish priests

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Abnet \Ab"net\, n. [Heb.] The girdle of a Jewish priest or officer.

Wiktionary Word definitions in Wiktionary
n. The girdle of a Jewish priest or officer. (First attested in the early 18 th century.) (R:SOED5: page=6)