Aazrak
Aazrak (אאזר), a Cabalistic word found in the Talmudic Lexicon Aruch, and apparently invented by the Rabbins in order to correspond to a prohibition found in the Mishna (Shabbate, 12:3) that no person should write on the Sabbath two letters, this word beginning with the letter 3 repeated. In the Talmud, however, it is written Aadrak (אאדר). Buxtorf (Lex. Talmud. col. 2) thinks it is merely the Biblical word - ָאֲאִזֶּר aazzerka', I will gird thee (Auth. Vers. "I girded thee"), found in Isa 45:5.