Merriam-Webster's Collegiate® Dictionary, 11th Edition
AYE
I. adverb also ay
Etymology: Middle English, from Old Norse ei; akin to Old English ā always, Latin aevum age, lifetime, Greek aiōn age
Date: 13th century
always , continually, ever ,
II. adverb also ay see: yea
Date: 1576
yes ,
III. noun also ay (plural ayes)
Date: 1589
an affirmative vote or voter