(n): a visible indication made on a surface
(n): a trace suggesting that something was once present or felt or otherwise important
(n): an indication that something has been present
(n): the area taken up by some object
(n): the extent of a 2-dimensional surface enclosed within a boundary
"I don't have a photograph, but you can have my footprints. They're upstairs in my socks."
- Groucho Marx.