زَمِيلٌ

One who rides behind another (IDrd, S, K) on a camel (IDrd, TA) that carries the food and the household-goods or furniture and utensils; (TA;) and ↓ زِمْلٌ signifies the same, (K,) and so does ↓ مَزْمُولٌ: (IDrd, TA:) or one who rides behind another on a horse or similar beast: (TA:) or one who rides with another in a مَحْمِل so as to counterbalance him. (Mgh.) It is metaphorically used in the saying, أَنْتَ فَارِسُ العِلْمِ وَأَنَا زَمِيلُكَ (tropical:) [Thou art the horseman of science, or knowledge, and I am he who rides behind thee]. (TA.)

Hence, A travelling-companion (Mgh, TA) who assists one in the performance of his affairs. (TA.) It is said in a tradition, لَا يُفَارِقُ رَجُلٌ زَمِيلَهُ, i. e. [A man shall not separate himself from] his travelling-companion. (Mgh.)

زَمِيلَانِ means Two men engaged in work upon their two camels: when they are without work, they are called رَفِيقَانِ. (K.)