dardaín

Etymology
A contraction of a phrase   "between two fasts"; Thursday is between Wednesday and Friday, which were designated fasting days.

Noun

 * 1) Thursday
 * 2) * , published in The Triads of Ireland (1906, Dublin: Royal Irish Academy), edited and with translations by Kuno Meyer, §217
 * "sga"

- Trí ferláe: .i. dardaín, aíne, domnach.

Inflection
Due to the word's origin as a prepositional phrase, it is indeclinable.