Definitions of article:

• noun:   one of a class of artifacts

  Example: "An article of clothing"

• noun:   nonfictional prose forming an independent part of a publication
• noun:   (grammar) a determiner that may indicate the specificity of reference of a noun phrase
• noun:   a separate section of a legal document (as a statute or contract or will)
• verb:   bind by a contract; especially for a training period