تعاوت 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.

• تعاوت Form 6

  6 تعاوت الكِلَابُ ذ The dogs cried, or cried loudly, [meaning howled,] one to another. (TA.) -b2- And تَعَاوَوْا عَلَيْهِ, (K, TA,) and تَغَاوَوْا, (TA,) They collected themselves together, (K, TA,) or aided one another,…

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