Definition of "aha" []

• Used to express surprise, pleasure, or triumph. (interjection)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Nor can you point to a single data point and say "aha" -- there's your doubt."
• "Thus No. 11 was called harma when it represented the spirant ch in all positions, but when this sound became breath h initially (though remaining medially) the name aha was devised, áre was originally ázå, but when this z became merged with 21, the sign was in Quenya used for the very frequent ss of that language, and the name esse was given to it. hwesta sindarinwa or ‘Grey-elven hw’ was so called because in Quenya 12 had the sound of hw, and distinct signs for chw and hw were not required."
• "A hiki lakou i Hinakahua i ke kahua mokomoko, ia manawa, ike mai la ka aha mokomoko i ke keiki Kauai, no ka oi o kona kanaka maikai mamua o na keiki kamaaina, a lilo iho la ka aha i mea haunaele."