طل doesn't appear in Hans Wehr's Modern Standard Arabic dictionary, but Lane's Arabic-English Lexicon has 4 entries for it, distinguished by diacritics. Select one below for the full classical Arabic definition.

• طَلَّتِ Form 1

  1 طَلَّتِ السَّمَآءُ الأَرْضَ ذ , [aor. طَلُلَ ,] inf. n. طَلٌّ, The sky rained small rain upon the earth, or land. (MA.) And طُلَّتِ الأَرْضُ, (S, O, K,) inf. n. as above, (TA,) [meaning, as is implied in the S and O, …

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• طَلٌّ

  طَلٌّ ذ Light, (Msb,) or weak, (K,) [i. e. drizzling,] rain: (Msb, K:) or the lightest, (K,) or weakest, of rain: (S, O, Msb, K:) or dew (نَدًى, K, TA) that descends from the sky in cloudless weather: (TA:) or above نَدً…

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• طُلٌّ

  طُلٌّ ذ : see طَلٌّ, in two places. [But the signification of “ blood ” there mentioned requires consideration; for Sgh adds immediately after explaining the saying مَا بِالدَّارِ طُلٌّ what here follows.] -b2- ذَهَبَ دَ…

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• طِلٌّ

  طِلٌّ ذ : see طَلٌّ, last sentence: -A2- and see also طُلٌّ.…

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