اون

اـِيوَانٌ اـيوان ايوان and ↓ اـِوَانٌ (T, S, M, Msb, K) [each] a foreign word, [i. e. Persian,] (M,) A chamber, or an apartment, (T, Msb,) or a large صُفَّة [i. e. porch, or roofed vestibule, or the like ], (S, K,) similar to an أَزَج [or oblong arched or vaulted structure, or a portico ], (T, S, M, K,) or built in the form of an أَزَج, (Msb,) not closed in the front, or face: (T, M, Msb: *) [and a palace; often used in this sense in Arabic as well as in Persian: and in the present day, the former, and more commonly لِيوَان, which is Persian, is also applied to an estrade; a slightly-raised portion of the floor, generally extending nearly from the door to the end, or to each end, of a room: ] pl. of the former, أَوَاوِينُ, (T, S, K,) because the sing. is originally اـِوْوَانٌ, (S,) and اـِيوَانَاتٌ; and pl. of the latter, أُونٌ. (T, S, K.) Hence, اـِيوَانُ كِسْرَى [ The great porch, or the palace, of Kisrà, or Chosroes, who is called صَاحِبُ الاـِيوَانِ]. (T, S, Msb.) ― -b2- Also the latter, [and app., accord. to the Msb, the former also,] Any prop, or support, of a thing: (T, Msb:) particularly, a pole of a [ tent of the kind called ] خِبَاآء. (T.) ― -b3- The اـِيوَان of the لِجَام [is The headstall of the bridle; and] has for its pl. اـِيوَانَاتٌ. (T, K.)