1. The predecessor of the Otter Dance.
2. An expression of joyful emotions.
3. The native sound of the Sobel habitat.
"Well I say governor, WALOO!!!"
by gamerdank420 September 15, 2008
1. The sound of a Sand Creature (Opi) on Family Guy's Blue Harvest version of Star Wars.

2. The sound high people make when the hear and/or find something amazing.
1. jdork: "There's a roach in the ashtray, WaLOO"
by jdork92 August 13, 2010
zero, nothing
1. to make a bid of zero, waloo
2. to bid zero, and take zero, waloo
3. a card game
by California big Mike December 28, 2008

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