Lumper

Lumper (countable and uncountable, plural Lumpers)

1. A variety of potato, best known as the variety that failed in the Irish potato famine.
   • 2012, David Buchanan, Taste, Memory: Forgotten Foods, Lost Flavors, and Why They Matter, →ISBN:

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

   • 2013, William Woys Weaver, 100 Vegetables and Where They Came From, →ISBN, page 146:

     The Lumper, as they call this particular variety of pots, is a symbol of this Irish dilemma, for this is the infamous potato that failed in the 1840s and caused the great famine. The Lumper is therefore one of the most historic of all the heirloom potato varieties now preserved under the careful eye of historic museums and potato enthusiasts alike, myself included.

   • 2015, Fiona Farrell, The Villa at the Edge of the Empire, →ISBN, page 39:

     In the 1840s, however, these two counties were among the worst affected when Ireland's potatoes -- those big floury Lumpers that sustained millions -- began to rot.

• Plumer, Rumple, replum, rumple