جَرَبٌ

[The mange, or scab;] a certain disease, (A,) well known; (S, A, K;) according to the medical books, (Msb,) a gross humour, arising beneath the skin, from the mixture of the salt phlegm, (Msb, MF,) or the phlegm of the flesh, (so in a copy of the Msb,) with the blood, accompanied with pustules, and sometimes with emaciation, in consequence of its abundance; (Msb, MF;) or [an eruption consisting of] pustules upon the bodies of men and camels. (M, TA.) You say, أعْدَى مِنَ الجَرَبِ عِنْدَ العَرَبِ [More transitive, or catching, than the mange, or scab, among the Arabs]: (A, TA:) a proverb. (TA.)

(assumed tropical:) Rust upon a sword. (K.)

(tropical:) A resemblance of rust upon the inner side of the جَفْن [or eyelid], (M, K,) sometimes covering the whole of it, and sometimes part of it. (M.) You say, بِأَجْفَانِهِ جَرَبٌ (tropical:) [In his eyelids is] a resemblance of rust upon their inner sides. (A.)

(assumed tropical:) A vice, a fault, a defect, an imperfection, or a blemish. (IAar, K.)