Noun baseline has 3 senses
  1. baseline - an imaginary line or standard by which things are measured or compared; "the established a baseline for the budget"
    --1 is a kind of
    standard, criterion, measure, touchstone
  2. service line, baseline - the back line bounding each end of a tennis or handball court; when serving the server must not step over this line
    --2 is a kind of line
  3. baseline - the lines a baseball player must follow while running the bases
    --3 is a kind of
    line
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