Found 2 items, similar to thumbscrew.
English → English (WordNet) Definition: thumbscrew thumbscrew n 1: instrument of torture that crushes the thumb 2: screw designed to be turned with the thumb and fingers
English → English (gcide) Definition: Thumbscrew Thumbscrew \Thumb"screw`\, n. 1. A screw having a flat-sided or knurled head, so that it may be turned by the thumb and forefinger. [1913 Webster] 2. An old instrument of torture for compressing the thumb by a screw; a thumbkin. [1913 Webster] [1913 Webster]