Zz definitions

ZZ

1) Jazz duet
Found on https://www.crosswordclues.com/clue/zz

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Zz

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Found on http://en.wikipedia.org/wiki/Zz

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Zz

ZZ is an abbreviation for Zwiazek Zawodow
Found on http://www.probertencyclopaedia.com/N26.HTM

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ZZ

zigzag approach.
Found on https://www.infoplease.com/dictionary/z-z

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