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.

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

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

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

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

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

(slang) A person who uses fraudulent cheques.

(tennis, informal) A drop shot.