1 definition by Kirsty Sarah-ann Valerie Brainwynn

.n. A state of action, loud, exciting, trouble and often chaotic
Children are arguing grand parent comes in
"What's all this Hullabaloo?" (which means- What's going o here? usually refering to noise)

or

"Shall we go check out this new club everyone one is raving about?"
"ye lets go see what all the hullabaloo is about"
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