1. lumper - Noun
2. lumper - Verb
The European eelpout; -- called also lumpen.
One who lumps.
A laborer who is employed to load or unload vessels when in harbor.
Source: Webster's dictionaryIn the 1800s, farmers in Ireland planted one variety of potato called the Lumper, which grows on small plots in even the worst soils. Source: Internet
Recently read about a potato called the Lumper that was said to be one of the causes of the Famine when it suffered a fungus and wouldn’t grow. Source: Internet