Geas

"Gaesa" redirects here. For the heavy metal band, see Geasa (band) A geas (pronounced //, plural geasan) has two interpretations in Gaelic mythology and folklore. First, it is a vow or obligation placed upon a person (usually a hero, such as Cuchulainn in Irish mythology). Traditionally, the doom of the hero comes about due to their violation of such geasan, either by accident, or by having multiple geasan and then being placed in a position where they have no option but to violate one geas in order to maintain another.
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