עָכַב (cmp. עָקַב) to be curved; hooked.
Pi. - עִיכֵּב 1) to detain, prevent. Mekh. B’shall. s. 1 ואל תְּעַכֵּב את גאולתנו and delay not our redemption. Ber. 7ᵃ ומי מְעַכֵּב, v. עִיסָה; a. fr.—Esp. to invalidate an act by an omission; to be indispensable (v. עִיכּוּב). Zeb. V, 1 מתנה אחת מהן מְעַכֶּבֶת the omission of one of these manipulations (v. מַתָּנָה) makes the whole act illegal. Ib. אם לא נתן לא ע׳ if he did not pour the blood into the y’sod (יְסוֹד), it does not invalidate the act. Ib. 48ᵃ לעַכֵּב מנין whence do we prove that it is indispensable? (opp. למצוה). Men. IV, 1 התכלת אינה מעכבת את הלבן the absence of the blue thread in the show fringes does not hinder the white thread, i.e. in the absence of the one, the other may do for the ceremony. Ib. הסולת והשמן אינם מְעַכְּבִין … ולא היין מְעַכְּבָן the flour and oil (of the Minḥah) are no hinderance to offering the wine, nor does the wine form a hinderance to them, i.e. the order in which they are offered is immaterial. Ib. המתנות … אינן מְעַכְּבוֹת זו את זו the sprinklings upon the outer altar are no hinderance to one another, i.e. one of them is enough to make the ceremony legal. Ber. 2ᵃ ביאת שמשו מְעַכַּבְתּוֹ מלאכול וכ׳ the sunset of his last day of levitical uncleanness is indispensable for allowing him to eat T’rumah, but the offering of his sacrifice is not; a. v. fr.—Part. pass. מְעוּכָּב; f. מְעוּכֶּבֶת; pl. מְעוּכָּבִים, מְעוּכָּבִין; מְעוּכָּבוֹת. Y. Sot. II, beg. 17ᵈ ומכיון שהוא מע׳ מלשמוח וכ׳ since he is prevented from rejoicing with her (at the sacrifice), it is as if he prevented her from partaking of the sacrifice (by failing to provide for her offering of sanctification). Ib. והוא מעכב מלשמוח (read מְעוּכָּב). Mekh. l. c. כי בגללך אנו מע׳ for we are detained on thy account; a. e. —2) to detain one’s self; to tarry; to wait for. Ex. R. s. 3 סבור אתה שהיה משה מעכב וכ׳ do you think that Moses hesitated (was unwilling) to go? Gen. R. s. 55 על מנת שנאמר לך … ולא תְעַכֵּב even if I tell thee to sacrifice thy son to me, thou wilt not hesitate. Ib. ולא יְעַכֵּב he will not hesitate. Ib. הלואי … ולא אֲעַכֵּב O! that the Lord would appear to me and tell me that I should cut off one of my limbs! I would not hesitate. Tanḥ. Ekeb 6 השכינה מעכבת ישראל וענני כבוד מְעַכְּבִין לך the Divine Presence is waiting, Israel and the clouds of glory are waiting for thee; ib. B’shall. 2; a. fr.