Instrument of torture that crushes the thumb.

Roget 975: scourge, rod, cane, stick; ratan^†, rattan; birch, birch rod; azote^†, blacksnake^†, bullwhack [U.S.], chicote^†, kurbash^†, quirt, rawhide, sjambok^†; rod in pickle; switch, ferule, cudgel, truncheon.    whip, bullwhip, lash, strap, thong, cowhide, knout; cat, cat o'nine tails; rope's end.    pillory, stocks, whipping post; cucking stool^†, ducking stool; brank^†; trebuchet^†, trebuket^†.    [instruments of torture: list], triangle, wooden horse, iron maiden, thumbscrew, boot, rack, wheel, iron heel; chinese water torture.    treadmill, crank, galleys.    scaffold; block, ax, guillotine; stake; cross; gallows, gibbet, tree, drop, noose, rope, halter, bowstring; death chair, electric chair; gas chamber; lethal injection; firing squad; mecate^†.    house of correction etc. (prison) 752.    goaler, jailer; executioner; electrocutioner^†; lyncher; hangman; headsman^†; Jack Ketch.    ... show more

Polish: zgniatacz kciuków

Screw designed to be turned with the thumb and fingers.