4 occurrences in 4 dictionaries
Reference: Besai
Hastings
Nethinim who returned with Zerub. (Ezr 2:49; ='/Nehemiah/7/52/type/leb'>Ne 7:52; = Basthai, 1Es 5:31).
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Smith
Be'sa-i
(sword). "Children of Besai" were among the Nethinim who returned to Judea with Zerubbabel.