\Drop"ping\, n.
1. The action of causing to drop or of letting drop; falling.
2. pl. That which falls in drops; the excrement or dung of
   animals.
{Dropping bottle}, an instrument used to supply small
   quantities of a fluid to a test tube or other vessel.
{Dropping fire}, a continued irregular discharge of firearms.
{Dropping tube}, a tube for ejecting any liquid in drops.