رَاجِسٌ
1.
and
مُرْتَجِسٌ (A, K) and
رَجَّاسٌ (S, A, K) A cloud making a loud, or vehement, sound; (S, A, K, TA;) and so thunder. (TA.) You say, [of a cloud,] هٰذَا رَاجِسٌ حَسَنٌ
This is a goodly thunderer. (S.) And عَفَتِ الدِّيَارَ
الغَمَايءِمُ الرَّوَاجِسُ وَالرِّيَاحُ الرَّوَامِسُ [The loudthundering clouds and the dust-spreading winds effaced the traces of the dwellings]. (A.)
2.
3.
[And hence,]
الرَجَّاسُ
The sea: (K:) because of the sound of its waves; or because of its commotion. (TA.)