طرس1 طَرَسَهُ, inf. n. طَرْسٌ, He wrote it; namely, a writing or book; as also سَطَرَهُ. (TA.) b2: See also 2.A2:  طَرِسَ, a verb like فَرِحَ, He (a man) became worn out in body, and aged. (Sgh, TA.) 2 طرّسهُ, (M, A,) so written by El-Urmawee, (TA,) inf. n. تَطْرِيسٌ; (A;) or ↓ طَرَسَهُ, aor. ـِ (K;) He obliterated it, or effaced it; (K, TA; [compare دَرَسَهُ;]) and (TA) he marred, or spoiled, it: (M, TA:) or he obliterated it, or effaced it, well. (A.) A2:  Also, the former, (M,) inf. n. as above, (K,) He blackened it; namely, a door. (M, K.) A3:  And طرّس, (TK,) inf. n. as above, (Lth, K,) He restored the writing upon a thing whereon the writing had been obliterated, or effaced. (Lth, K. *) 5 تطّرس He ate not, nor drank, aught save what was good; (K, TA;) like تنطّس: so says IF. (TA.) b2:  تطرّس عَنْهُ He shunned it; kept  aloof, or preserved himself, from it; (Sgh, K, TA;) and held himself above the commission of it. (Sgh, TA.) طِرْسٌ A written paper or the like; syn. صَحِيفَةٌ, (S, A, Msb, K;) or صَحِيفَةٌ إِذَا كُتِبَتْ; as also طِلْسٌ: (Sh, TA:) or one of which the writing has been obliterated, or effaced, and which has then been written upon [again]; (S, A, Msb, K;) [a palimpsest;] as also طِلْسٌ: (S:) or one of which the writing has been obliterated, or effaced, well: (Az, in TA, art. طلس:) or a writing that has been obliterated, or effaced, and then written [again]; as also طِرْصٌ: (M:) or an obliterated, or effaced, writing upon which one is able to renew the writing: (Lth, TA:) pl. [of pauc.]أَطْرَاسٌ (S, M, Msb, K) and [of mult.] طُرُوسٌ. (M, A, Msb, K.) مُتَطَرِّسٌ One who seeks, pursues, or desires, the most pleasing of things; who picks, or chooses. (T, K, TA.)