Response to a riot

• Reaction to a joke
• Reaction to a knee-slapper
• Ditch acting as a fence
• Response to humor
• "Ver-r-ry funny!"
• Reaction button option for a Facebook post
• LOL, spoken
• Laugher's sound
• Ditch with a retaining wall used to divide land

Wikipedia Word definitions in Wikipedia
The Haha or Iḥaḥan (in their own language) (Arabic حاحا Ḥāḥā ) are a Berber people in the Western High Atlas in Morocco . They identify themselves as a tribal confederacy of the Chleuh people , and speak the Shilha language . Their region stretches along ...