noun (n)

• an edible tuber native to South America; a staple food of Ireland(noun.food)

  Synonym:
  irish potato, murphy, spud, tater, white potato
  

  source: wordnet30
• annual native to South America having underground stolons bearing edible starchy tubers; widely cultivated as a garden vegetable; vines are poisonous(noun.plant)

  Synonym:
  solanum tuberosum, white potato, white potato vine
  

  source: wordnet30
• A plant (Solanum tuberosum) of the Nightshade family, and its esculent farinaceous tuber, of which there are numerous varieties used for food. It is native of South America, but a form of the species is found native as far north as New Mexico.(noun)

  source: webster1913