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stalk noun

  /stɑk/ , /stɔk/ , /stɔːk/
  • The stem or main axis of a plant.
  • (mathematics, sheaf theory) Informally, a construction which generalizes that of the notion of the ring of germs of functions near a point to the context of arbitrary sheaves. Formally, given a sheaf \mathcal{F} on a space X, and a point x in X, the direct limit of the sections of F on the open neighborhoods of x ordered by reverse inclusion. See w:Stalk (sheaf) on Wikipedia.Wikipedia
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