أَرْجَابٌ

The أَمْعَاء [i. e. bowels, or intestines, into which the food passes from the stomach]: (As, S, K:) it has no plural (S, K) known to A'Obeyd: (S:) or its singular is ↓ رَجَبٌ, (Kr, K,) or ↓ رُجْبٌ, (K,) or ↓ رِجْبٌ. (Ibn-Hamdaweyh.)