طغوى 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.

• طَغْوَى

  طَغْوَى ذ a subst. from the verb طَغَا, (K, TA,) [and] so is , (Msb,) or the latter is an inf. n., (S, K,) and, accord. to Az, so is طَغْوَى, and so too is , which latter is said by Zj to be the original of طَغْوَى: (TA:…

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