Smith's Dictionary
The Bene-Hassenaah rebuilt the fish-gate in the repair of the wall of Jerusalem. (Nehemiah 3:3) (B.C. 446.)
International Standard Bible Encyclopedia
has-e-na'-a (haccena'ah): In Ne 3:3 the "sons of Hassenaah" are mentioned among the builders of the wall. Probably the same as Senaah (Ezr 2:35; Ne 7:38) with the definite article, i.e. has-Senaah. The latter, from the connection, would appear to be a place-name.
See also HASSENUAH.