رون

رُونَةٌ ذ The greater, main, principal, or chief, part of a thing. (M, K.) ― -b2- And Hardness, difficulty, or severity, of a thing, or an affair, or event; and grievousness thereof: so in the saying, كَشَفَ ا@للّٰهُ عَنْكَ رُونَةَ هٰذَا الأَمْرِ [ May God remove from thee the hardness, &c., and the grievousness, of this thing, or affair, or event ]. (M.) [See also رَوْنٌ.] ― -b3- And The utmost limit, reach, or degree, of a thing, in respect of heat, or cold, or in other respects, as when said of grief, or of war, or the like: and hence is said to be taken the name الرُّنَةُ [or رُنَةُ, without ال, (see الرُّنَّى, in art. رن,) as though it were a contraction of رُونَة,] given to [ the month ] Jumádà-l-Ákhireh, because of its intense cold [when it was so named]. (TA.)