Webster's Revised Unabridged Dictionary · 1913

Aye

Aye ({not transcribed}) , adverb

[Perh. a modification of yea, or from the interjection of admiration or astonishment, Old English ei, ey, why, hey, ay, well, ah, ha. Compare Middle High German & German ei, Danish ej. Or perh. akin to aye ever.]

Yes; yea; -- a word expressing assent, or an affirmative answer to a question. It is much used in viva voce voting in legislative bodies, etc.

This word is written I in the early editions of Shakespeare and other old writers.

Also: Ay

Aye ({not transcribed}) , noun

An affirmative vote; one who votes in the affirmative; as, “To call for the ayes and noes;” “The ayes have it.”

Aye ({not transcribed}) , adverb

[Icelandic ei, ey; akin to Anglo-Saxon ā, āwa, always, Gothic aiws an age, Icelandic afi, OHG, {not transcribed}wa, Latin aevum, Greek {not transcribed} an age, {not transcribed}, {not transcribed}, ever, always, German je, Sanskrit {not transcribed}va course. {not transcribed}, {not transcribed}. Compare Age, v., Either, a., Or, conj.]

Always; ever; continually; for an indefinite time.
For his mercies aye endure. — Milton
Collocations (1)
For aye or always , ; forever; eternally.

Also: Ay