bocardo

CIDE DICTIONARY

bocardo, n. [A mnemonic word.].

A form of syllogism of which the first and third propositions are particular negatives, and the middle term a universal affirmative. [1913 Webster]
"Baroko and Bocardo have been stumbling blocks to the logicians." [1913 Webster]
A prison; -- originally the name of the old north gate in Oxford, which was used as a prison. Latimer. [1913 Webster]

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