عقب

عَقَبٌ ذ The عَصَب [meaning sinews, or tendons, ] of which أَوْتَار [i. e. strings for bows or the like ] are made: (S, O, K: [see also 1, last quarter:]) n. un. with 3: (S, O:) or such as are white of the أَطْنَاب of the joints; (Mgh, Msb; [see عَصَبٌ;]) the عَصَب being such as are yellow: (Mgh and Msb in art. عصب:) accord. to IAth, the عَصَب [or sinews, or tendons, ] of the two portions of flesh next the back-bone on either side, and of the سَاقَانِ and وَظِيفَانِ [meaning the hind and fore shanks ], that are intermingled with the flesh, of any animal; the half of one whereof, divided lengthwise from the other half, is extended, or drown out, and trimmed, and cleansed of the flesh, and the وَتَر [or string for the bow or the like ] is made thereof; and they are sometimes in the two sides of the camel; but [ properly speaking ] there is a difference between the عَصَب and the عقَب; the former being such as incline to yellow, whereas the latter incline to white, and are the harder, and firmer, or stronger, of the two: AHn says, on the authority of Aboo-Ziyád, that the عَقَب are [the sinews, or tendons, ] of the two portions of flesh next the back-bone on either side, of the sheep or goat, and of the camel, and of the ox or cow, (TA.) [See also عِلْبَاآءٌ.]