Hid'dai (Heb. Hidday', הַדִּי, exuberant or mighty; Sept. Alex. MS. Α᾿θθαί, Vat. MS. omits; Vulg. Heddai), one of the thirty-seven heroes of David's guard (2Sa 23:30), described as "of the torrents of Gaash." In the parallel list of 1 Chronicles (11:32) the name is given as HURAI SEE HURAI (q.v.), in favor of which reading Kennicott (Dissert. p. 194) decides. — Smith.