Boyd’s Bible Dictionary:
(dawn). Zarah, a son of Judah, in genealogy of Christ (Matt. 1:3).
Concise Bible Dictionary:
Son of Judah and Tamar (Gen. 38:30; Gen. 46:12; Num. 26:20; Josh. 7:1,18,24; Josh. 22:20; 1 Chron. 2:4,6; 1 Chron. 9:6; Neh. 11:24; Matt. 1:3).
Jackson’s Dictionary of Scripture Proper Names:
a rising (as the sun)