dropper

noun droppers

1. A utensil for dispensing a single drop of liquid at a time. 'Cause when the blood begins to flow When it shoots up the dropper's neck[…]
2. One who or that which drops something, especially one who drops a specific item to cause mischief. The dropper left the suitcase with the bomb next to the garbage can.
3. An entity that drops objects of a particular kind. In most tycoons, you will find an automatic machine called a dropper, which is used for producing bricks.
4. A software component designed to install malware on a target system.
5. A fly that drops from the leaden above the bob or end fly.
6. A branch vein which drops off from, or leaves, the main lode.
7. The young bulb of a tulip, not of flowering size.
8. A dog which suddenly drops upon the ground when it sights game.
9. Australia A batten fixed to a post-and-wire fence to keep the wires apart.
10. slang A person who uses fraudulent cheques. Thus an American police chief discussing the 'cheque-droppers', then peculiar to his side of the Atlantic, who were taking a toll estimated at […] Over the years, forgery has tended to be an amateur operation — a crime of opportunity.
11. informal A drop shot.
12. historical A delivery by lob bowling (no longer legal).
13. historical A bowler who makes such deliveries.
14. A seat post whose height can be adjusted while riding.