rack(redirected from racking brain)
Also found in: Dictionary, Thesaurus, Medical, Encyclopedia.
Related to racking brain: racking up
RACK, punishments. An engine with which to torture a supposed criminal, in
order to extort a confession of his supposed crime, and the names of his
supposed accomplices. Unknown in the United States.
2. This instrument, known by the nickname of the Duke of Exeter's daughter, was in use in England. Barr. on the Stat. 866 12 S. & R. 227.