What does "stinging" mean?

Stinging: Piercing, or capable of piercing, with a sting; inflicting acute pain as if with a sting, goad, or pointed weapon; pungent; biting; as, stinging cold; a stinging rebuke. -- Sting"ing*ly, adv. Stinging cell. (Zoöl.) Same as Lasso cell, under Lasso.