جو The air: (K:) or [the atmosphere; i. e.] what is between the heaven, or sky, and the earth; (S, Mgh;) the air [or the region] between the heaven, or sky, and the earth: pl. أَجْوَآءٌ. (TA.) فِى جَوِّ السَّمَآءِ, in the Kur [xvi. 81], means In the air between the heaven, or sky, and the earth: (Jel:) or in the middle of the sky: (Katádeh, TA:) or in the air that is remote from the earth. (Bd.) ― -b2- A low, or depressed, part of the ground; (M, K;) as also ↓ جَوَّةٌ : (K:) or a wide part of a valley: (S, Msb:) pl. (in the latter sense, Msb, or in the former, K, TA) جِوَآءٌ (Msb, K) and [of pauc.] أَجْوِيَةٌ. (TA.) It has the latter meaning in the saying of Tarafeh, [addressing a lark,] “ خَلَا لَكِ الجَوُّ فَبِيضِى وَاصْفِرِى
” [The wide part of the valley has become vacant for thee; so lay thine eggs, and whistle]. (AA, S.) Az says, I entered, with an Arab of the desert, a [hollow place in which water collected, termed a] دَحْل, in El-Khalsà, and when we came to the water, he said, هٰذَا جَوٌّ مِنَ المَاءِ لَا يُوقَفُ عَلَى أَقْصَاهُ [This is an abyss of water: one knows not the utmost extent of it]. (TA.) ― -b3- A vacant, void, or desolate, place, in which is no one to cheer by his company. (Ham p. 293.) ― -b4- The inside, or interior, of a house or tent; (K;) and of anything; of the dial. of Syria; also termed ↓ جَوَّةٌ , (TA,) and ↓ جَوَّانِىٌّ ; (K; [in the CK ا is erroneously put for ن;]) in which last, the ا and أُرِيدُ جَوًّا وَيُرِيدُ بَرًّا are augmentatives for the purpose of corroboration. (TA.) ― -b5- [Hence,] جَوَّةٌ I desire concealment, or secrecy, and he desires publicity. (A in art. بر.) جَوَّةٌ جو جوه جوة : see جَوٌّ, in two places. جَوَّانِىٌّ جوانى جواني : see جَوٌّ. Hence the saying of Selmán, مَنْ أَصْلَحَ جَوَّانِيَّهُ أَصْلَحَ اللّٰهُ بَرَّانِيَّهُ [explained in art. بر]. (TA.) [It generally signifies Inner, inward, or interior; and secret, or private; opposed to بَرَّانِىٌّ; and is now vulgarly pronounced جُوَّانِىْ.] It is a rel. n. [irregularly formed] from جَوٌّ signifying “ any low, or depressed, part of the ground. ” (T in art. بر.) Credit: Lane Lexicon