IPA: /ˈfʊtprɪnt/
KK: /ˈfʊtˌprɪnt/
A mark or impression left by a foot on a surface, or the area that something occupies.
The hiker noticed a large footprint in the mud along the trail.
Footprint → It is formed from "foot" (from Old English "fōt", meaning the lower extremity of the leg) and "print" (from Old French "printe", meaning to press or mark). The word "footprint" refers to the mark left by a foot on a surface.
Think of the 'foot' as the part of the leg that leaves a 'mark' ('print') on the ground — that's what a footprint is.