خَيْطٌ

1.
Thread, or string; or a thread or string; synonym سِلْكٌ; (S, K;) the thing with which one sews; (Msb;) [often used as a coll. gen. n.; n. un. with ة;] and خِيَاطٌ [likewise] signifies the thing with which a garment, or piece of cloth, is sewed; as also مِخْيَطٌ; besides having another signification, common to it with the last, namely “a needle; ” (K;) the plural of خَيْطٌ is أَخْيَاطٌ [a plural of pauc.] (IB, K) and خُيُوطٌ (S, Msb, K) and خُيُوطَةٌ [both pls. of mult.]. (S, K.) It is said in a tradition, وَالمِخْيَطَ أَدُّوا الخِيَاطَ, meaning [Bring ye] the خَيْط and the needle. (TA.) And you say, أَعْطِنِى خِيَاطًا and نِصَاحًا, i. e. [Give thou to me] a single خَيْط. (AZ, TA.) [أَعْطِنَى خِيَاطًا وَنِصَاحًا may, however, mean Give thou to me a needle and thread.]
2.
خَيْطُ الرَّقَبَةِ (assumed tropical:) The نُخَاع [or spinal cord] of the neck. (S, K) You say, جَاحَشَ فُلَانٌ عَنْ خَيْطِ رَقَبَتِهِ, meaning (tropical:) Such a one defended his blood. (S, O, L.)
3.
الخَيْطُ الأَبْيَضُ and الخَيْطُ الأَسْوَدُ, mentioned in the Qur'an, 2:183, mean (assumed tropical:) The true dawn, and the false dawn: (Msb:) or the whiteness of the dawn, and the blackness of night; (K, TA;) likened to a thread because of its thinness: (TA:) or the whiteness of day, and the blackness of night: (A 'Obeyd, Nh:) or the dawn that extends sideways, and the dawn that rises high, or, as some say, the blackness of night: (S:) or what appears of the true dawn, which is the مُسْتَطِير, and what extends with it of the darkness of night, which is the dawn termed the مُسْتَطِيل: (Mgh:) or what first appears of the dawn spreading sideways in the horizon, and what extends with it of the darkness of the last part of the night: (Bd:) or the dawn that rises high, filling the horizon, and the dawn that appears black, extending sideways: (Aboo-Is-hák:) or the real meaning is the day and the night. (TA.) الخَيْطَانِ also signifies (assumed tropical:) The night and the day. (L in article وسد.) تَبَيَّنَ الخَيْطُ مِنَ الخَيْطِ means (tropical:) [The night became distinct from the day: or] what is termed الخَيْطُ الأَبْيَضُ became distinct from what is termed الخَيْطُ الأَسْوَدُ. (TA.) And خَيْطٌ مِنَ الصُّبْحِ is also said to signify (assumed tropical:) A tint of the dawn. (TA.) [See بَرِيمُ الصُّبْحِ in article برم.]
4.
خَيْطُ بَاطِلٍ (tropical:) What is called لُعَابُ الشَّمْسِ and مُخَاطُ الشَّيْطَانِ, (S, TA,) which last is explained by Z and IB as meaning what comes forth from the mouth of the spider: (TA: [the author of which says that, according to this explanation, this term differs from لعاب الشمس: but in so saying he seems to be in error: both evidently signify gossamer:]) it was applied as a surname, or nickname, to Marwán Ibn-El-Hakam; because he was tall, and loose, or uncompact, in frame: (S:) or it signifies the air; synonym الهَوَاءُ [perhaps a mistranscription for الهَبَاءُ, occurring in another explanation hereafter]: (K:) or light entering from an aperture in a wall [into a dark place] (Th, K:) or خَيْطُ البَاطِلِ signifies the scattered هَبَاء [or atoms that are seen in the rays of the sun] entering from an aperture in a wall [into a dark place] when the sun is hot: and one says, فُلَانٌ أَدَقُّ مِنْ خَيْطِ البَاطِلِ (tropical:) [Such a one is less in estimation than the scattered atoms that are seen in the rays of the sun]; a prov., applied to him who is in an abject state; thus related, on the authority of Ahmad Ibn-Yahyà, by Az and others; but by Sgh, erroneously, أَرَقُّ مِنْ خَيْطِ بَاطِلٍ. (TA.)
5.
See also what next follows, in two places.

Perseus ID: n11836