Meaning of Thumbscrew
Unknown / অজানা / अज्ञात
a screw, the head of which is so constructed that it may be turned easily with the thumb and a finger.
Often, thumbscrews. an old instrument of torture by which one or both thumbs were compressed.
an instrument of torture that pinches or crushes the thumbs
a screw with projections on its head enabling it to be turned by the thumb and forefinger