Definition of "geas" [geas]

• A vow or obligation placed upon a person. (noun)
• A curse. (noun)
• A mystical compulsion. (noun)

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• ""To break a geas, that is courting complete dis - aster.""
• "For the Eddorian's binding'this is perhaps as good a word for it as any, since "geas" implies a curse-was such that the Gray Lensman could return to space and time only under such conditions and to such an environment as would not do him any iota of physical harm."
• "And now has come upon me a geas which is not to be lifted either by toils or by miracles."