Thumb"screw` (?), n. 1.
A screw having a flat-sided or knurled head, so that it may be turned
by the thumb and forefinger.
2. An old instrument of torture for compressing the
thumb by a screw; a thumbkin.
Thumb"screw` (?), n. 1.
A screw having a flat-sided or knurled head, so that it may be turned
by the thumb and forefinger.
2. An old instrument of torture for compressing the
thumb by a screw; a thumbkin.