síordhaidheacht
Definitions (by source)
m. ‘eternity’; sīoruigheachd 44.9
Aibidil Gaoidheilge & Caiticiosma: Seaán Ó Cearnaigh's Irish primer of religion, published in 1571. Editor: Brian Ó Cuív.
f., eternity, 6573; gen. –a, 5272, 10191
Trí Bior-Ghaoithe an Bháis: The Three Shafts of Death. Editor: Osborn Bergin.