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Noun: ha-ha  haa haa
  1. A loud laugh that sounds like a horse neighing
    - hee-haw, horselaugh, haw-haw
  2. A ditch with one side being a retaining wall; used to divide lands without defacing the landscape
    - sunk fence, haw-haw

Derived forms: ha-has

Type of: ditch, laugh, laughter

Encyclopedia: Ha-ha