noun \-ˌskrü\

: a device used in the past to torture people by crushing their thumbs

: a type of screw with a flat-sided head that can be held and turned with your thumb and fingers

Full Definition of THUMBSCREW

:  an instrument of torture for compressing the thumb by a screw
:  a screw having a flat-sided or knurled head so that it may be turned by the thumb and index finger

Illustration of THUMBSCREW

First Known Use of THUMBSCREW



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