جأر1 جَأَرَ, aor. ـَ inf. n. جُؤَارٌ (S, A, K) and جَأْر (K,) He, (a bull, S and K, or a calf, A,) and جَأْرَتْ she, (a cow, K,) lowed. (S, A, K.) جُؤَارٌ is like خُوَارٌ; and is substituted for the latter in a reading of the Kur vii. 146 and xx. 90. (Akh, S.) b2:  Also, (S, A, K,) inf. ns. as above, (K,) He (a man praying, A and TA) raised his voice in prayer, or supplication: (Th, K:) he cried out: (Es-Suddee, TA:) he cried out, calling for aid, or succour; humbled, or abased, himself, and raised his voice: (A:) he humbled, or abased, himself, with earnest supplication; (S, K;) اِلَى اللّٰهِ to God; (S;) and cried out, or called, for aid, or succour. (K.) [Accord. to Katádeh, يَجْأَرُونَ in the Kur xxiii. 66 signifies يَخْرَعُونَ, as written in the TA; but this is app. a mistranscription for يَجْزَعُونَ, They manifest grief and agitation; &c.] b3:  Also (tropical:)  It (a plant) grew tall; (A, K;) like as one says, صَاحَتِ الشَّجَرَةُ. (A.) and جَأَرَتِ الأَرْضُ (tropical:)  The plants, or herbage, of the land grew tall. (A, K.) جَأْرٌ, applied to herbage, (Az, A, K,) (tropical:)  Fresh, juicy, or sappy: (K, * TA:) or tall, and fullgrown: (Az, TA:) and abundant. (A, K.) b2: غَيْثٌ جَأْرٌ, (K,) and ↓ جُؤَرٌ, (As, S, A, K,) and, accord. to As, ↓ جُؤَارٌ, (TA voce جَوَرٌّ,) as also جِوَرٌّ, (K,) (tropical:)  A copious rain; (As, S, A, K;) that makes the plants, or herbage, to grow tall: (A:) or the second, a rain that makes a sound, or noise. (TA.) جُؤّرٌ: see جَأْرٌ.جُؤَارٌ: see جَأْرٌ.هُوَ جَأّرٌ بِاللَّيْلِ [He is one who cries out, calling for aid, or succour; who humbles, or abases, himself, and raises his voice; much, or often, by night]. (A, TA.)