יִדּוֹעַ, name of abird (Maim.) or a beast (Rashi), a bone of which is used for witchcraft. Targ. Y. Lev. XIX, 31 (ed. Amst. יָדוֹעַ); a. e.—Snh. 65ᵇ; (Tosef. ib. X, 6 ידעוני).