noun (n)

• (used only in combinations) the height or length of something in feet(noun.quantity)

  Example:
  He is a six-footer.
  The golfer sank a 40-footer.
  His yacht is a 60-footer.
  

  source: wordnet30
• a person who travels by foot(noun.person)

  Synonym:
  pedestrian, walker
  

  source: wordnet30
• a printed note placed below the text on a printed page(noun.communication)

  Synonym:
  footnote
  

  source: wordnet30