ركب

مُرَكَّبٌ ذ A man to whom a horse is lent for a portion of the spoil that he may obtain: (IAar, TA:) or a man who borrows a horse upon which to go forth on a warring and plundering expedition, and who receives one half of the spoil, the other half being for the lender: (K:) or one to whom a horse has been given for him to ride, and who has put his foot into the stirrup. (A.) [Also] Weak in the art of horsemanship, or the management of horses, and the riding of them. (Ham p. 441.) ― -b2- [Also Put, or set, one part upon another: set, or fixed, in another thing: composed; constituted; or put together: see its verb, 2.] The stone [ set ] in the signet-ring is termed مُرَكَّبٌ and ↓ رَكِيبٌ; and so the arrowhead [ fixed ] in the shaft: (S:) or رَكِيبٌ signifies, (K, TA,) as a subst., (TA,) a thing set (مُرَكَّبٌ) in a thing, such as a ring-stone in the bezel, or collet, of the signet-ring. (K, * TA.) -A2- Also (tropical:) Origin: and place of growth or germination or vegetation. (S, K, TA.) You say, فُلَانٌ كَرِيمُ المُرَكَّبِ (tropical:) Such a one is generous, or noble, in respect of the origin of his rank among his people. (S, A. *)