رَبْلٌ
1.
Fat, and soft, or supple: [perhaps, in this sense, a contraction, by poetic license, of رَبِلٌ:] an epithet applied to a man. (Ham p. 630.)
2.
Also A sort of trees which, when the season has become cool to them, and the summer has retired, break forth with green leaves, without rain: (As, A'Obeyd, T, S:) or certain sorts of trees that break forth [with leaves] in the end of the hot season, after the drying up, by reason of the coolness of the night, without rain: (K:) according to Aboo-Ziyád, a plant, or herbage, that scarcely, or never, grows but after the ground has dried up; as also رَيِّحَةٌ and خِلْفَةٌ and رِبَّةٌ: (TA:) [and] leaves that break forth in the end of the hot season, after the drying up, by reason of the coolness of the night, without rain: (M:) plural رُبُولٌ. (S, M, K.)