An unsoundness in the hand or arm, or a vitiated state thereof. (S, O.) [See also 1, first sentence, where it is mentioned as a verbal noun]
2.
And (tropical:) A stain, (S, O,) or a blackness, (K,) or a dust-colour, (TA,) in a garment, or piece of cloth, that does not become removed by washing. (S, O, K, TA.) One says, مَا هٰذَا الشَّلَلُ فِى ثَوْبِكَ, (S, O,) or بِثَوْبِكَ, (TA,) (tropical:) [What is this stain, &c., in thy garment?]
3.
-A2- Also The act of driving away: (S, O, K:) a subst.: (S, O:) or a verbal noun, (Ksh in xii. 3,) [see 1, latter half,] i. q.طَرْدٌ, like [the verbal noun] شَلٌّ, (K,) as also ↓شُلَّةٌ. (TA.)