Jastrow: מִילָּא I

מִילָּא I, מִילָּה, מִילַּת f. a species of oak from which the gall-nut is collected (quercus infectoria), or the acorns of which are used as tanning material (quercus aegilops or Oak of Bashan) [not ash-tree]. Midd. III, 7 מלתראות של מ׳ (some ed. מילה, Maim. מילת) beams of Milla; Erub. 3ᵃ Ms. M. (ed. מילה); Lev. R. s. 17, beg.—[Tosef. Shebi. V, 3 עלי מילת leaves of the Millath (prob. used for steeping in wine or oil). Ib. (missing in ed. Zuck.) עיקר מלת the real Millath-nut(?).]—Pl. מִילִּין. Ib. VII, 11; Y. ib. IX, 38ᵈ bot.; Pes. 53ᵃ סימן להרים מ׳ an indication of highlands is the growth of Milla-trees.—מֵי מ׳ a solution of acorns; also a solution of gall-nuts. Gitt. 19ᵃ (v. אֲפַץ) שאין מי מ׳ על גבי מי מ׳ (Ar. ע"ג מ׳) for a tanned ink will not take on a tanned hide. Y. ib. II, 44ᵇ top: when one desires to write a secret letter to his friend, הוא כתב במי מ׳ והך דמקבל וכ׳ he writes with a solution of gall-nut, and the recipient of the letter pours over it untanned ink which settles on the writing.