Definition of "thumbkin" []

• An instrument of torture for compressing the thumb; a thumbscrew. (noun)

Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License

• ""The monks of Vera Cruz can best tell thee where little 'thumbkin' is.""
• "'thumbkin' soul which Yama receives and carries off in the tale of Satyavant."
• "Martyr, she would have preferred to be torn asunder with one jerk, rather than submit to the thumbkin."