عنو 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.

• عَنَا Form 1

  1 عَنَا ذ , (S, Mgh, Msb,) first pers. عَنَوْتُ, (K,) aor. يَعْنُو, (S, Msb,) inf. n. عُنُوٌّ, (S, Mgh, Msb, K, *) and is the subst. thereof, (Mgh, K, * TA,) [and] so is , (Msb,) or عَنْوَةٌ is its inf. n., (MA,) [and so…

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• عِنْوٌ

  عِنْوٌ ذ sing. of أَعْنَآءٌ as signifying The sides, regions, quarters, or tracts, (S, K,) of a country, (S,) or of the sky; (K;) like أَحْنَآءٌ: (S in art. حنو and حنى:) or, accord. to IAar, its sing., in this sense, …

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