رءس

رَائِسٌ ذ [act. part. n. of 1.] ― -b2- كَلْبَةٌ رَائِسٌ, (M,) or رَائِسَةٌ, (TA,) A bitch that takes the object of the chase by the head. (M, TA.) And [in like manner] ↓ كَلْبَةٌ رَؤُوسٌ A bitch that springs upon the head of the object of the chase. (TA.) -A2- رَائِسٌ also signifies Anything elevated, or rising above the part or parts adjacent to it. (M, TA.) The head (↓ رَأْس) of a valley: (M, TA:) pl. رَوَائِسُ, (TA,) which signifies the upper, or uppermost, parts of valleys. (K, TA.) -A3- سَحَابَةٌ رَائِسٌ, (M,) or رَائِسَةٌ, (TA,) and ↓ مُرَائِسٌ, (M,) (assumed tropical:) A cloud preceding the other clouds: (M: [but perhaps سَحَابَةٌ in the copy of the M from which this is taken is a mistake for سَحَابٌ, i. e. clouds: ]) pl. رَوَائِسُ. (K, * TA.) ― -b2- See also رَئِيسٌ, in two places.