lumper

noun5

1. •
   A scientist in one of various fields who prefers to keep categories such as species or dialects together in larger groups.
2. •
   An extra laborer hired to assist in the loading or unloading of a truck or a ship.
3. •
   (dialect) A militiaman.
4. •
   (dialect) A lamprey.
5. •
   (historical) Synonym of lumpman (“type of salt worker”).

verb1

1. •
   (no longer used) To lumber; to plod.

   • Over piggeries, and mixens, and apples, and hay, / They lumpered straight into the night; / And finding bylong where a halter-path lay, / At dawn reached Tim's house […] — 1866

noun1

1. •
   A variety of potato, best known as the variety that failed in the Irish potato famine.

   • “Over there I'm growing Lumper,” he tells us as we look across potato rows growing between poplar windbreaks. — 2012