جاسة doesn't appear in Hans Wehr's Modern Standard Arabic dictionary, but Lane's Arabic-English Lexicon has an entry for it. Select the entry below for the full classical Arabic definition.

• جَاسَّةٌ

  جَاسَّةٌ جاس جاسه جاسة a dial. var. of حَاسَّةٌ, (Msb,) and sing. of جَوَاسٌّ, (Msb, TA,) which is syn. with حَوَاسٌّ, (Kh, S, A, K,) signifying The five senses. (TA.) See حَاسَّةٌ.…

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