سجن1 سَجَنَهُ, (S, Msb, K,) aor. ـُ inf. n. سَجْنٌ, (S, Msb,) He imprisoned him. (S, Msb, K.) b2: [Hence,] it is said in a trad., مَا شَىْءٌ أَحَقَّ بِطُولِ السَّجْنِ مِنْ لِسَانٍ (assumed tropical:)  [There is not anything more deserving of long restraint than a tongue]. (L.) b3:  And سَجَنَ الهَمَّ (tropical:)  He secreted anxiety; did not reveal it. (L, K.) A poet says, وَ لَا تَسْجُنَنَّ الهَمَّ إِنَّ لِسَجْنِهِ عَنَآءً وَ حَمِّلْهُ المَهَارَى النَّوَاجِيَا (tropical:)  [And by no means secrete thou anxiety: verily  to the secreting thereof pertains embarrassment: but load with it fleet camels of Mahreh]. (L.) 2 سجّنهُ, inf. n. تَسْجِينٌ, i. q. شَقَّقَهُ [He cut it, or divided it, lengthwise; clave it; split it; &c.]. (K.) b2:  And سجّن النَّخْلَ He made the palmtrees to be such as are termed سِلْتِين [or سِجِّين; i. e. he dug at their feet trenches to conduct the water to them when it did not reach to them]. (K.) سِجْنٌ A prison; (S, L, Msb, K;) as also ↓ سِجِّينٌ: (L:) pl. of the former سُجُونٌ. (Mgh, Msb.) سَجِينٌ is syn. with ↓ مَسْجُونٌ [Imprisoned]; pl. سُجَنَآءُ and سَجْنَى: and is applied to a female likewise, as also سَجِينَةٌ; pl. سَجْنَى and سَجَائِنُ. (K.) سَجَّانٌ The keeper of a prison. (K.) سِجِّينٌ: see سِجْنٌ. b2:  [In the Kur lxxxiii. 7,] A certain place in which is the record [of the deeds] of the wicked; (S, L, K;) or, as I 'Ab  says, in which are their registers: AO says, it is of the measure فِعِّيلٌ from السِّجْنُ, like الفِسِّيقُ from الفِسْقُ: (S, L:) or a certain valley in Hell: or a certain stone, [or rock,] (L, K,) beneath, (L,) or in, (K,) the seventh earth: (L, K:) [these explanations are given by those who hold that مَا سِجِّينٌ in the next verse is for مَا كِتَابُ سِجِّينٍ:] or it there means a register comprising the deeds of the wicked, (Bd, Jel, *) of the jinn, or genii, and of mankind, (Bd,) or of the devils and the unbelievers: (Jel:) or ما سجّين in the next verse is for ما كتاب سجّين, and the meaning is the place, (Bd, Jel,) which is beneath the seventh earth, the abode of Iblees and his forces: (Jel:) IAth says, it occurs in a trad. with the article ال; and without that article it is a proper name for the fire [of Hell], and hence the mention of it in the Kur lxxxiii. 7. (L.) [See also سِجِّيلٌ.]A2:  Also Anything hard: (L:) and hard, vehement, or severe; (S, L, K;) applied to a beating. (S, L.) b2:  And Continuing, lasting, or everlasting; syn. دَائِمٌ; (L, K;) as also سِجِّيلٌ: so accord. to El-Muärrij. (L. [See, again, سِجِّيلٌ.]) A3:  And i. q. عَلَانِيَة: (L, K:) so in the saying, عَمِلَ ذٰلِكَ سِجِّينًا [He did that openly, or publicly]. (L.) A4:  Also Palm-trees (نَخْل) such as are termed سِلْتِين (As, L, K) in the dial. of the people of El-Bahreyn; (As, L;) [app. meaning that the latter word is of that dial.;  for it is said that] the Arabs [app. the Arabs in general] say سِجِّين in the place of سِلْتِين, which is not Arabic: (L:) the palm-trees thus termed are such as have trenches dug at their feet to conduct the water to them when it has not reached to them. (L, and K in art. سلتن.) سَاجُونٌ Iron such as is termed أَنِيث [i. e. female, meaning soft]. (L.) مَسْجَنَةٌ, accord. to Freytag, The act of imprisoning: but it seems rather to be a word of the class of مَبْخَلَةٌ and مَجْبَنَةٌ &c., and to signify a cause of imprisonment.]مَسْجُونٌ: see سَجِينٌ.