أَلْبٌ

(T, S, Msb) and ↓ إِلْبٌ (S, Msb) Persons, or people, collected together; (S;) an assembly; a collected body: (Msb:) or a collection of many people: (T:) and ↓ أَلْبٌ أَلُوبٌ a great assembly or congregation. (M.)

Also A people, or company of men, combining in hostility against a man. (TA, from a tradition) You say, هُمْ عَلَيْهِ أَلْبٌ وَاحِدٌ, and ↓ إِلْبٌ, (but the former is the better known, M,) They are [one body of men] assembled against him with injustice and enmity or hostility: (Lth, T, M, K:) like وَعْلٌ وَاحِدٌ and صَدْعٌ وَاحِدٌ and ضِلَعٌ وَاحِدٌ. (T, TA.)