גָּדַד gâdad (H1413)

to crowd; also to gash (as if by pressing into)

1) to penetrate, cut, attack, invade 1a) (Qal) to penetrate, cut into 1b)(Hithpoel) 1b1) to cut oneself 1b2) to gather in troops or crowds

a primitive root (compare גּוּד (H1464));