Noun footprint has 3 senses
  1. footprint, footmark, step - a mark of a foot or shoe on a surface; "the police made casts of the footprints in the soft earth outside the window"
    --1 is a kind of mark, print
    --1 has particulars: footprint evidence
  2. footprint - a trace suggesting that something was once present or felt or otherwise important; "the footprints of an earlier civilization"
    --2 is a kind of
    trace, vestige, tincture, shadow
  3. footprint - the area taken up by some object; "the computer had a desktop footprint of 10 by 16 inches"
    --3 is a kind of
    area, expanse, surface area
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