اصر

مَأْصِرٌ ذ and مَأْصَرٌ A place in which a person or thing is confined, shut up, or imprisoned: pl. مَاآصِرٌ; for which the vulgar say, مَعَاصِرُ. (S, K.) ― -b2- Also, the former, (M, A,) or مَاصِرٌ; (TA;) either of the measure مَفْعِلٌ from الأَصْرُ, or of the measure فَاعِلٌ from المِصْرُ; A thing intervening between two other things and preventing the passage from one to the other; a barrier: (A:) a rope across a road or river, preventing the passage of travellers and ships or boats, (M, L,) for the taking of the tithes from them. (L.)