عنس 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.

• عَنَسَتْ Form 1

  1 عَنَسَتْ ذ , (S, A, Mgh, O, Msb, K,) aor. عَنُسَ (S, A, O, Msb, K) and عَنِسَ ; (A, O, Msb, K;) and عَنِسَتْ, aor. عَنَسَ ; (A, O, K;) inf. n. عُنُوس (S, A, Mgh, O, Msb, K) and عِنَاسٌ, (S, A, O, K,) or the latter is a…

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• عَنْسٌ

  عَنْسٌ ذ A rock. (TA.) -b2- And hence, as being likened thereto, (TA,) (assumed tropical:) A she-camel that is hard, or firm, (IAar, S, O, K, TA,) or strong, (TA,) such as is termed بَازِل, when she is of full age, and h…

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