tacha Definitions (by source) Show all Aithdioghluim Dána: A Miscellany of Irish Bardic Poetry, Historical and Religious, including the Historical Poems of the Duanaire in the Yellow Book of Lecan. Vol II, Translations, Notes, Vocabulary neamh- 16 27 n. Aithdioghluim Dána: A Miscellany of Irish Bardic Poetry, Historical and Religious, including the Historical Poems of the Duanaire in the Yellow Book of Lecan. Vol II, Translations, Notes, Vocabulary. Editor: Lambert McKenna S.J. Poems on the O'Reillys want, scarcity. tacha barr, scarcity of crops, 3723. Poems on the O'Reillys. Editor: James Carney.