رَعْنٌ

A prominence, or projecting part, (S, K,) or such as is large, (TA,) of a mountain: (S, K:) plural رُعُونٌ and رِعَانٌ. (S, K.) And A long mountain: (K:) or, according to Lth, a mountain that is not long: plural رُعُونٌ. (TA.)