مَرَسَةٌ

, (S, K,) or ↓ مَرَسٌ, (A,) or both, the latter being sometimes used as a singular, (M,) A rope: (S, M, K:) so called because of the strong twisting and adhering (تَمَرُّس) of its strands, one upon another: (TA:) plural [or rather coll. gen. n.] of the former, مَرَسٌ; (S, M, K;) and plural plural, (M, K,) [i. e.] plural of مَرَسٌ, (S, A, *) أَمْرَاسٌ. (S, M, A * K.)

Also, the former, A dog's rope: plural as above. (M.)