Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of thumbscrew is as below...

Thumbscrew :: Thumbscrew (n.) A screw having a flat-sided or knurled head, so that it may be turned by the thumb and forefinger..

Thumbkin :: Thumbkin (n.) An instrument of torture for compressing the thumb; a thumbscrew.

Thumbscrew :: Thumbscrew (n.) An old instrument of torture for compressing the thumb by a screw; a thumbkin.

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