sabbat

from WordNet (r) 3.0 (2006)

sabbat
    n 1: a midnight meeting of witches to practice witchcraft and
         sorcery; in the Middle Ages it was supposed to be a demonic
         orgy [syn: {sabbat}, {witches' Sabbath}]

from The Collaborative International Dictionary of English v.0.48

Sabbat \Sab"bat\, n. [See {Sabbath}.]
   In mediaeval demonology, the nocturnal assembly in which
   demons and sorcerers were thought to celebrate their orgies.
   [1913 Webster]

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