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1.
Ear-piercing cackle a woman makes for attention usually within a group of other women. Often heard at restaurants.
I wish that lady with the chicken laugh would shut up!

Hear that chicken laugh?...must be a bunch of women over there.

Dude, you sound like a girl with that chicken laugh!
by thedzone October 04, 2009
 
2.
A laugh expressing extreme hilarity. This is the ultimate form of a laugh, and even can be insulting to some if used in the right context. Just like its name, the laugh resembles a chicken.
Chad chicken laughed at his teacher so hard she kicked him out of her class.
by Chad Freechman January 07, 2011