جرذ

جَرَذٌ ذ (tropical:) Any swelling, (A'Obeyd, S, Mgh, L, K,) and inflation of the sinews, (A'Obeyd, S, Mgh, L,) in the hock (A'Obeyd, S, Mgh, L, K) of a horse (A'Obeyd, Mgh, L) or similar beast; (S, K;) and in the side of the hock-joint, externally and internally; (A'Obeyd, Mgh, L;) derived from جُرَذٌ, because resembling in form the rat (فأر) thus called: (Mgh:) or an inflation of the sinews of a horse's legs, occasioning swellings which are likened to [ the rats called ] جِرْذَان: (A:) or a swelling in the side of a horse's hoof, and in his stifle-joint (ثَفِنَة), or in the hinder part of his hock, which grows so large as to prevent his walking and working; also written جَرَدٌ; (ISh, L in arts. جرذ and جرد;) and likewise affecting the camel: (ISh, L in art. جرذ:) the original word is with ذ. (TA.) ― -b2- Also (tropical:) The faulty parts, or knots, of a tree, which are pared off; likened to جِرْذَان. (A.)