ratchet screwdriver

from WordNet (r) 3.0 (2006)

ratchet screwdriver
    n 1: a screwdriver with a ratchet (so the blade turns in only
         one direction) and a spiral in the handle (so the blade
         rotates) with downward pressure on the handle [syn: {spiral
         ratchet screwdriver}, {ratchet screwdriver}]