ظلال doesn't appear in Hans Wehr's Modern Standard Arabic dictionary, but Lane's Arabic-English Lexicon has 2 entries for it, distinguished by diacritics. Select one below for the full classical Arabic definition.

• ظَلَالٌ

  ظَلَالٌ ذ , like سَحَابٌ, [so accord. to the K, but in my copies of the S, ,] A thing that shades one, (IAar, S, O, K, TA,) such as a cloud, (IAar, S, TA,) and the like. (IAar, TA.) [See also ظُلَّةٌ.]…

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• ظِلَالٌ

  ظِلَالٌ ذ pl. of ظِلٌّ: (S, M, O, K:) -b2- and of ظُلَّةٌ. (M, K.) -b3- [Also, app., pl. of ظَلِيلٌ: see ظِلَّةٌ. -b4- Freytag has app. understood it to be expl. in the K as syn. with مَظَلَّةٌ; though it certainly is no…

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