رَيءِيسٌ

Hit, or hurt, in the head; as also ↓ مَرْوءُوسٌ. (S.) Hence, شَاةٌ رَيءِيسٌ A sheep or goat, or a ewe or she-goat, hit, or hurt, in her head: plural رَاسَى: (S, M, K:) you say غَنَمٌ رَاسَى. (S, K.)

Having his head broken, its skin being cleft. (TA.)

Having his head affected, or overcome, by the disease called بِرْسَام; as also ↓ مَرْوءُوسٌ: (A:) or ↓ the latter, a man afflicted with that disease: (M, TA:*) and ↓ the same, also, a man having a complaint of his head. (TA.)

-A2- (tropical:) The head, or headman, chief, commander, governor, ruler, lord, master, prince, or king, of a people; a person of authority; (S, M, A, * K;) as also ↓ رَيِّسٌ (S, K) and ↓ رَأْسٌ [q. v.]; (M, A, K;) and [in like manner] ↓ رَايءِسٌ, synonym of this last, وَالٍ: (K:) or رَيءِيسٌ signifies, [or rather signifies also,] a person high in rank or condition: (Msb:) its plural is رُوءَسَاهُ, (M, Msb,) pronounced by the vulgar رُوَسَاء: (TA:) in El-Yemen, ↓رَيِّسٌ is applied to one who shaves the head. (TA in article ريس.)

رَيءِيسُ الكِلَابِ (S, M, A,) and ↓ رَايءِسُهَا, (M, TA,) (tropical:) [The chief, or leader, of the dogs;] the dog that is' among the other dogs, as the رَيءِيس among a people: (S:) the chief of the dogs, that is not preceded by them in the chase. (M, TA.)

الأَعْضَاءُ الرَّيءِيسَةُ (tropical:) [The capital parts of an animal] are, with physicians, four; (Mgh, TA;) namely, the heart, the brain, the liver, and the testicles: (Mgh, K, TA:) the first three, because without every one of them the person cannot exist; and the last, because privation thereof is a privation of نَوْع [properly species]: the assertion that they are the nose, and the tongue, and the penis, is erroneous. (Mgh, TA.)