oibrighim
Definitions (by source)
I work, operate, 1547, 2865.
An Teagasg Críosdaidhe. Editor: Fearghal Mac Raghnaill, O.F.M.
I act, operate, 1988; past. subj. –gheadh, effect, 8340
Trí Bior-Ghaoithe an Bháis: The Three Shafts of Death. Editor: Osborn Bergin.