It can mean 'on' and in some cases 'on-him/on-it'.
'air chuairt' on a trip
'Dè'n t-ainm a tha air?' What the name that is on-him? (What is his name?)
In Scottish Gaelic it would be 'tuirbin gaoithe'.
Bidh ionndrainn air ...
In Irish 'perseverence' is buanseasmhacht or buaine. In Scottish Gaelic: ?
In Irish: literally 'on the fence' is ar an gclaí;In Scottish Gaelic: air an fheansa.
Scottish Gaelic: Còig air fhichead, or fichead 's a còig. Irish Gaelic: Cúig is fiche Manx Gaelic: Queig as feed
"eiridh tonn air uisge balbh" means "a wave will rise on quiet water". It is a lovely warning.
In Scottish Gaelic usage: Bris air a' ghal (Start to cry); gal = cry.In Irish: gal is (Warlike) ardor; valor, furygal also can mean a blusterergál is gall, as in gál darach, oak-gall.
còig air fhichead ("Five on twenty")
Còig air fhichead, or fichead 's a còig.
air cluanaidh
Ar feadh na síoraíochta in Irish.Scottish Gaelic: Air feadh na sìorraidheachda. (verify)
The Scottish Gaelic phrase for "welcome home" is "fàilte air ais." In Gaelic, "fàilte" means "welcome" and "air ais" means "home" or "back." This phrase is commonly used to greet someone returning home or to express a warm welcome to someone visiting a place.