ay

exclamation3

1. •
   Ah! alas! Expressing anger, alarm, frustration, pain, etc.
2. •
   Used in ay, ay.
3. •
   (Scotland, Northern-England) Expressing earnestness, surprise, wonder, etc.

   • Ay! bonny little buttercup, what are ta dewin’ heear, / Hoddin’ up thi tiny heead, this raw, cowd time o’ t’year? — 1888

adverb1

1. •
   (Scotland, no longer used) Always; ever; continually; for an indefinite time.

   • O he that hath ay lived free, … — 1670

exclamation2

1. •
   New Zealand spelling of eh (question tag).

   • For example, New Zealanders tended to say "ay" at the end of sentences, but in the Asian community people used different tags to check whether people were still listening. — 2013
2. •
   All right (inter); hooray (inter); cool (inter).

noun1

1. •
   Initialism of academic year.