D defs.my
Entry 1 sense Webster, 1913

Abracadabra

/ăbˌ-rək-əd-ăb'-rə/ · Ab·ra·ca·dab·ra · IPA /ˌæbɹəkəˈdæbɹə/
01 n. A mystical word or collocation of letters written as in the figure. Worn on an amulet it was supposed to ward off fever. At present the wor…
  1. 1.
    A mystical word or collocation of letters written as in the figure. Worn on an amulet it was supposed to ward off fever. At present the word is used chiefly in jest to denote something without meaning; jargon.