Edward William Lane, An Arabic-English Lexicon, ث

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ثَنِيَّةٌ ثني ثنيه ثنية I. q. عَقَبَةٌ: (AA, M, Mgh, K:) or the latter means a long mountain that lies across the road, and which the road traverses; and the former, any such mountain that is traversed: (T:) so called because it lies before the road, and crosses it; or because it turns away him who traverses it: (Mgh:) or the road of what is termed عَقَبَة: (S; and so in copies of the K:) or a high road of what is thus termed: (K accord. to the TA:) or a road in, or upon, a mountain, (M, K,) like that which is termed نَقْبٌ [q. v.]: (M:) or a road to a mountain: (M, K:) or a mountain (M, K) itself: (M:) or a part of a mountain that requires one, in traversing it, to ascend and descend; as though it turned the course of journeying: (Er-Rághib, TA:) pl. ثَنَايَا: (T, S:) which signifies also [such roads as are termed] مَدَارِج. (T.) Hence the phrase, فُلَانٌ طَلَّاعُ الثَّنَايَا Such a one rises to eminences, or to lofty things or circumstances, or to the means of attaining such things; like the phrase طَلَّاعُ أَنْجُدٍ [q. v.]: (S:) or, like the latter phrase, is accustomed to embark in, or undertake, or to surmount, or master, lofty and difficult things: (Mgh:) or is hardy, strong, or sturdy; one who embarks in, or undertakes, great affairs. (TA. [See an ex. under the heading of اِبْنُ جَلَا, in art. جلو: and see also art. طلع.]) ― -b2- Also, (T, S, M, &c.,) pl. ثَنَايَا (T, S, Mgh, Msb) and ثَنِيَّاتٌ, (Msb,) One of certain teeth, (T, S, M, Mgh, Msb, K,) the foremost in the mouth, (M,) [namely, the central incisors,] four in number, (T, M, Mgh, Msb,) to man, and to the camel, (T, M, &c.,) and to the wild beast, (M,) in the fore part of the mouth, (T, Mgh, K,) two above and two below: (T, M, Mgh, K:) so called as being likened to the ثَنِيَّة of a mountain, in form and hardness; (TA;) or because each of them is placed next to its fellow. (Mgh.) -A2- Also fem. of ثَنِىٌّ [q. v.]. (T, S, M, &c.) -A3- See also ثُنْيَا, in five places.