Noun tuber has 2 senses
  1. tuber - a fleshy underground stem or root serving for reproductive and food storage
    --1 is a kind of
    stalk, stem
    --1 has particulars:
     water chestnut; groundnut, potato bean, wild bean; Jerusalem artichoke; yam; sweet potato
  2. Tuber, genus Tuber - type genus of the Tuberaceae: fungi whose fruiting bodies are typically truffles
    --2 is a kind of fungus genus
    --2 is a member of Tuberaceae, family Tuberaceae
    --2 has members: truffle, earthnut, earth-ball
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