tabashiv. a. i.to mourn for the dead; to wear mourning clothes. When the old Choctaw mourn they put on old, filthy garments, and do not wash, shave, comb, or visit or attend any assembly of people. They also cry several times daily at the grave or at the poles set up for the dead, called mourning poles, 2 Sam. 14:2.alsotʋbashi