From Wiktionary, the free dictionary
From Old Irish étrum. By surface analysis, ao- + trom.
aotrom (comparative nas aotruime, superlative as aotruime)
- light
- buoyant
- dizzy, lightheaded
- wanton
- ^ John MacPherson (1945) The Gaelic dialect of North Uist (Thesis)[1], Edinburgh: University of Edinburgh