from The American Heritage® Dictionary of the English Language, 4th Edition
- interj. Used to express surprise, pleasure, or triumph.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- interj. An exclamation of understanding, realization, invention, or recognition.
from the GNU version of the Collaborative International Dictionary of English
- n. A sunk fence. See ha-ha.
- interj. An exclamation expressing, by different intonations, triumph, mixed with derision or irony, or simple surprise.
from The Century Dictionary and Cyclopedia
- An exclamation expressing triumph, contempt, simple surprise, etc., according to the manner of utterance.
- n. Same as ha-ha.
Sorry, no etymologies found.
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.
Alaila, hele mai la kekahi kamaaina ma ko lakou nei wahi e noho ana, ninau aku la o Aiwohikupua i ka hana a ka aha, haiia mai la e like me ka olelo a kela mau wahine i olelo ai.
Ia Aiwohikupua ma ka aha, olelo aku la oia imua o Haunaka, "Aole e eha ke keiki Kauai ia oe, he lala kamahele no ka laau ku i ka pali."
A ike mai la ka aha kanaka a pau o ke kahua mokomoko i ka oi ana o ka ikaika o Aiwohikupua, no ka make loa ana o ke kanaka ma ke pale wale ana no.
Ninau aku la o Hinaikamalama i ka mea nona ka aha lealea, haiia mai la no Hauailiki me Makeweli.
Ia manawa, nene aku la ka aha kanaka a puni ka papai kilu, me ka hoohewa loa ia Aiwohikupua.
Ia Poliahu ma eha e ku ana me na kapa hau o lakou, he mea e ka hulali, ia manawa, nei aku la ka aha lealea no keia poe wahine, no ke ano e o ko lakou kapa.
However the slide that seems to get the most "aha, that is really cool!" is the slide about optimistic locking.