طهآء 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.

• طَهَآءٌ

  طَهَآءٌ ذ , (S, K, TA,) with the lengthened ا, (S, TA,) is like طَخَآءٌ; (K, TA; [in some copies of the K, each of these is erroneously written with the shortened ا, without ء;]) i. e. it is a dial. var. of the latter …

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