1646, "use of divining rod" (especially to discover ores or underground water), from Gk. rhabdos "rod, twig, stick" + manteia "divination, oracle." Gk. rhabdos is from PIE *werbh- (cf. Lith. virbas "twig, branch, scion, rod," L. verbena "leaves and branches of laurel"), from base *werb- "to turn, bend"