بلاس 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.

• بَلَاسٌ

  بَلَاسٌ بلاس , (S, Msb, K,) like سَلَامٌ, (Msb,) and سَحَابٌ, (K,) [in a copy of the M written بِلَاسٌ,] A [garment, or piece of stuff, of the kind called] مِسْح [i. e. of hair-cloth]: (S, M, Msb, K:) used in this sense …

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• بَلَّاسٌ

  بَلَّاسٌ بلاس One who sells what is termed بَلَاس. (K.)…

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