[1] : The Collaborative International Dictionary of English v.0.48

aha \aha"\, interj. ah, interj. + ha.
   an exclamation expressing, by different intonations, triumph,
   mixed with derision or irony, or simple surprise.
   1913 webster

[2] : The Collaborative International Dictionary of English v.0.48

aha \aha"\, n.
   a sunk fence. see ha-ha. --mason.
   1913 webster
see also:
ha-ha 

[3] : Easton's 1897 Bible Dictionary

aha
   an exclamation of ridicule ps. 35:21; 40:15; 70:3. in isa.
   44:16 it signifies joyful surprise, as also in job 39:25, r.v.
   

A-Ha >> A Words
A-Ha, definition of term: A-Ha
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