ilphiastt
Definitions (by source)
a monster, 4292. [Cf. ilphiasta nimhe, SSA, 240. uilp[h]ēist, gs. uilp[h]iasta, ZCP, vi, 295. as. oilphéisd (v. 11. ilbhēisd, ilphiast), TD, 6, §36. uillphiast, ITS, 1, 26.]
Desiderius, otherwise called Sgáthán an Chrábhaidh. Editor: Thomas F. O’Rahilly.