Drop"per (?), n.
1.
One who, or that which, drops. Specif.: Fishing A fly that drops from the leaden above the bob or end fly.
2.
A dropping tube.
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.
© Webster 1913.