رسو

مِرْسَاةٌ ذ , The anchor of a ship: (S, M, K:) or a large anchor, which, being tied with ropes and let down into the water, holds fast the ship, so that she does not go on: (T, TA:) pl. مَرَاسٍ. (Har p. 111.) [Hence,] one says, أَلْقَوْا مَرَاسِيَهُمْ, meaning (assumed tropical:) They remained, stayed, dwelt, or abode. (TA.) And أَلْقَتِ السَّحَابَةُ مَرَاسِيَهَا (tropical:) The cloud rained continually; syn. دَامَت: (S, Msb:) or remained steady, raining: (T, TA:) or remained still, or stationary, and rained. (M, K: * in the latter, السَّحَابُ is put in the place of السحابة.)