From Old Irish aird f (“peak, point; point of the compass, quarter, direction”).
àird f (genitive singular àirde, plural àirdean)
- (geography): height, high place
- point (of a compass), direction
- lean sinn air an àird 160° ― we followed a bearing of 160°
- cridhe na h-àird a tuath ― true north (literally "heart of the direction of north")
- a thàinig o dhiofar àirdean ― that came from different directions
- point, promontory
- "àird" in Dictionary of the Irish Language, Royal Irish Academy, 1913–76.