Noun yardstick has 2 senses
  1. yardstick - a measure or standard used for comparison; "on what kind of yardstick is he basing his judgment?"
    --1 is a kind of
    standard, criterion, measure, touchstone
  2. yardstick, yard measure - a ruler or tape that is three feet long
    --2 is a kind of rule, ruler
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