رَعٌّ
The being still, synonym سُكُونٌ, [a signification contr. to one borne by two other words in this article,] (IAar, K,) is the verbal noun of رَعَّتِ
الرِّيحُ, aorist
رَعُ3َ
, [probably a mistake for
رَعِ3َ
, which is the regular form of an intrans. verb of this class, notwithstanding the guttural letter,] The wind was, or became, still. (TK.)