Easton's Bible Dictionary (1897)
Rust, (1 Chr. 4:5, 7), one of the wives of Ashur.
Smith's Bible Dictionary (1863)
(rust), one of the two wives of Ashur, father of Tekoa. (1 Chronicles 4:5)
Hastings' Dictionary of the Bible (1898) & Schaff's Bible Dictionary
HE'LAH (rust), a wife of Ashur, 1 Chr 4:5.