dropper

A utensil for dispensing a single drop of liquid at a time.

One who drops something, especially one who drops a specific item to cause mischief.

A software component designed to install malware on a target system.

A fly that drops from the leaden above the bob or end fly.

A branch vein which drops off from, or leaves, the main lode.

The young bulb of a tulip, not of flowering size.

A dog which suddenly drops upon the ground when it sights game.

A batten fixed to a post-and-wire fence to keep the wires apart.

A bowler who makes such deliveries.

A seat post whose height can be adjusted while riding.

A person who uses fraudulent cheques.

A drop shot.

A delivery by lob bowling (no longer legal).