عصب

12 اِعْصَوْصَبَ القَوْمُ ذ The people, or party, collected themselves together: (TA:) or did so, and became companies such as are called عَصَائِب, (S, O, TA,) and became one of such companies: [see also 8; and see عُصْبَةٌ:] and in like manner, [ did so, and ] strove, or exerted themselves, in journeying, or pace. (TA.) And اعصوصبت الاـِبِلُ The camels strove, or exerted themselves, in journeying, or pace; as also ↓ اعصبت: and collected themselves together; (K;) [and] so ↓ عَصَبَت and ↓ عَصِبَت: (Fr, S, O:) or collected themselves together so as to become one عِصَابَة, and strove, or exerted themselves, in journeying, or pace. (TA.) ― -b2- اعصوصب is also said of a day, [app. in relation to heat,] meaning It was, or became, vehement, or severe: (S, O:) and of evil, meaning it was, or became, vehement, or severe, (K, TA,) and concentrated. (TA.)