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taproot

Definitions of taproot
  1. noun
    (botany) main root of a plant growing straight downward from the stem
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    type of:
    root
    (botany) the usually underground organ that lacks buds or leaves or nodes; absorbs water and mineral salts; usually it anchors the plant to the ground
  2. noun
    something that provides an important central source for growth or development
    “the taproot of his resentment”
    “genius and insanity spring from the same taproot
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    type of:
    germ, seed, source
    anything that provides inspiration for later work
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