הַרְדַּפְנֵי, (Chald. form of הַרְיֹּופַנִּין) a creeper the berries of which were known to be injurious to animals. Ḥull. III, 5 (58ᵇ); Tosef. ib. III, 19.—Mekh. B’shall., Vayassa 1 (ref. to Ex. XV, 25) זה עץ ה׳ it was the trunk of an ivy; Ex. R. s. 50; (ib. s. 23 ירדינון); Yalk. ib. 256 הרדפוני (corr. acc.); Tanḥ. B’shall. 24 ה׳ מר היה; Tanḥ., ed. Bub., ib. 19.—[Var. הירדופני, v. Koh. Ar. s. v.]—Targ. Y. Ex. XV, 25 אַרְדַּפְנֵי.