רֵחַיִים, (sing.) (b. h.; רחה to rub) millstone, mill. B. Mets. IX, 13 החובל את הר׳ עובר וכ׳ he who takes a mill to pledge violates a prohibitory law, and is guilty of taking two vessels &c.; ולא ר׳ ורכב בלבד וכ׳ and not only mill and upper millstone are meant (Deut. XXIV, 6), but anything with which a living is made &c. Men. X, 4, a. e., v. גָּרוֹסָה. Bets. II, 9, v. פִּלְפָּל Tosef. B. Bath. III, 2; Y. ib. IV, 14ᶜ bot. ר׳ התחתונה the lower (stationary) millstone (for crushing olives); ר׳ העליונה the upper millstone. Ohol. VIII, 3 הר׳ של אדם a mill worked by man, handmill. Tosef. ib. IX, 2 נדחק בר׳ שהגוי וכ׳ if a person is pressed to work at a mill where there is a gentile or a menstruant; איזו היא הר׳ כל שעוקרין אותה וכ׳ (not כל שאין עוקרין, v. R. S. to Ohol. VIII, 3) what kind of a mill is meant? Such as can be lifted or pushed from its place; Tosef. Toh. VI, 11; a. fr.—Kidd. 29ᵇ ר׳ בצוארו he has a millstone on his neck (has wife and children to support).