مَيْسٌ

A kind of tree, (AHn, S, M, K,) of great size, (A, Hn, M, K,) resembling in its growth and its leaves the [kind of willow called] غَرَب: when young, it is white within; but when it grows old, it becomes black, like ابُنُوس [or ebony], and so thick that wide tables are made of it; (AHn, M;) and camels' saddles (رِحَال) are made of it. (AHn, S, M.)

Hence, A camel's saddle (رَحْلٌ), as being made of the kind of tree above described. (TA.)

Also, A species of grape-vine, that rises somewhat upon a trunk, (AHn, M, K, *) not all of it spreading out into branches: (AHn, M:) AHn adds, its native place is the district of El-Jezeereh called Sarooa (سَرُوع), and it is related, of a person of knowledge, that he saw it at Et-Táïf: and hence the name of the raisins called ↓ مَيْسِىّ: (TA:) [but ISd says, in continuation of AHn's account of the former of the trees above mentioned, not of the latter,] an Arab of the desert informed me, that he had seen it at Et-Táïf, and hence, he said, the raisins called مَيْس [not مَيْسِى] are thus named: (M:) [and F says,] مَيْسٌ signifies a kind of raisins; as well as a species of grapevine &c. (K.)

Also, [The pole of a plough;] the long piece of wood that is between the two bulls. (AHn. M.)