from the GNU version of the Collaborative International Dictionary of English

  • n. A form of syllogism of which the first and third propositions are particular negatives, and the middle term a universal affirmative.
  • n. A prison; -- originally the name of the old north gate in Oxford, which was used as a prison.

from The Century Dictionary and Cyclopedia

  • n. In logic, the mnemonic name of that mood of the third figure of syllogism in which the major premise is a particular negative, the minor a universal affirmative, and the conclusion a particular negative proposition: as, Some patriarchs (Enoch, Elijah) are not mortal; but all patriarchs are men; hence, some men are not mortal.
  • n. A prison: so called from the old north gate of Oxford, which had this name and was at one time used as a prison.


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