/ ˌæbrəkəˈdæbrə; NAmE / exclamation
a word that people say when they do a magic trick, in order to make it successful
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WORD ORIGIN
late 17th cent. (as a mystical word engraved and used as a charm to keep away illness): from Latin , first recorded in a 2nd-cent. poem by Q. Serenus Sammonicus, from a Greek base.