Definition of "geis" [geis]

• Plural form of gei. (noun)
• A solemn injunction (noun)

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• "A geis was a kind of obligation, imposed either magically or by honor."
• "From geopolitics we then come to the nature of the word Geass, apparently it's derived from the ancient Gaelic term geis and is referred to in the series as the power of kings."
• "Boece again most emphatically rejects the idea that the "geis" were produced from the wood of which the timbers were composed, and once more proclaims his belief that the "nature of the seis resolvit in geis" may be accepted as the true and final explanation of their origin."