יְסוֹדָא, same. Targ. Ex. XXIX, 12; a. fr.—Pl. יְסוֹדַיָּא, constr. יְסוֹדֵי. Targ. O. Num. V, 17 (ed. Berl. אֵיסוֹדֵי; h. text קרקע).—Y. B. Mets. X, beg. 12ᶜ תרוייהו אילין י׳ both (the upper and the lower portions) are foundations (v. יָסַד).
יְסוֹדָא, pl. rest, head-rest (cmp. אִיסָדָא). Targ. Y. II, Gen. XXVIII, 10 תחות י׳ רישיה in place of his headrest.