1.One who, or that which, drops. Specif.: (Fishing) A fly that drops from the leader above the bob or end fly.
2.A dropping tube, usually of glass or plastic with a narrow opening at the tip and a rubber bulb at the top which can be squeezed to control intake or outflow of the fluid. The word is used in combinations with obvious significance, as eye dropper, medicine dropper, etc.
3.(Mining) A branch vein which drops off from, or leaves, the main lode.
4.(Zool.) A dog which suddenly drops upon the ground when it sights game, formerly a common, and still an occasional, habit of the setter.
