1 definition by bicycleboy

Top Definition
A combination of yacking off and cackling. It can be used as an adjective or verb to refer to a group of young people disturbing public peace through loud speech interlaced with grating laughter.
The chugging of the train, combined with the constant yackling of the five girls seated in front of me, was enough to give any sane person a terrible migraine.
by bicycleboy April 17, 2009

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