سطر doesn't appear in Hans Wehr's Modern Standard Arabic dictionary, but Lane's Arabic-English Lexicon has 5 entries for it, distinguished by diacritics. Select one below for the full classical Arabic definition.

• سَطَرَ Form 1

  1 سَطَرَ ذ , (S, M, Msb, &c.,) aor. سَطُرَ , (S, M, Msb;) inf. n. سَطْرٌ; (S, M, Msb, K; *) and ; (M;) and ; (S, M, A, Msb, K;) He wrote (S, M, * A, Msb, K) a writing or book. (M, Msb.) -b2- [And سَطَرَ He ruled a book. …

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• سطّر Form 2

  2 سطّر ذ : see 1. -b2- Also, inf. n. تَسْطِيرٌ, He composed (M, K) lies, falsehoods, (TA,) or أَسَاطِير, i. e. stories having no foundation, &c. (M.) -b3- Also, [not تسطّر as in Gol.,] He said what was false: and he pret…

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• سَطْرٌ

  سَطْرٌ ذ , (S, M, A, Msb, K,) originally an inf. n., [see 1,] (S,) and , (S, M, Msb, K,) A line (S, M, K) of a book or writing: (M, A, K:) and a writing: (S, K:) and (tropical:) a line or row (S, M, A, Msb, K) of buildin…

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• سَطَرٌ

  سَطَرٌ ذ : see the next preceding paragraph.…

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• سُطُرٌ

  سُطُرٌ ذ : see أُسْطُورَةٌ.…

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