tionnsgnamh
Definitions (by source)
beginning, act of beginning, v.n. of tionnsgnaim, 1278.
Poems on the O'Reillys. Editor: James Carney.
m., act of beginning, 693
Trí Bior-Ghaoithe an Bháis: The Three Shafts of Death. Editor: Osborn Bergin.