noun (n)

• a line of text serving to indicate what the passage below it is about(noun.communication)

  Synonym:
  head, heading
  

  source: wordnet30
• horizontal beam used as a finishing piece over a door or window(noun.artifact)

  Synonym:
  lintel
  

  source: wordnet30
• brick that is laid sideways at the top of a wall(noun.artifact)

  Synonym:
  cope, coping
  

  source: wordnet30
• a framing member crossing and supporting the ends of joists, studs, or rafters so as to transfer their weight to parallel joists, studs, or rafters(noun.artifact)

  source: wordnet30
• a machine that cuts the heads off grain and moves them into a wagon(noun.artifact)

  source: wordnet30
• (soccer) the act of hitting the ball with your head(noun.act)

  source: wordnet30
• a headlong jump (or fall)(noun.act)

  Example:
  He took a header into the shrubbery.
  

  source: wordnet30
• One who, or that which, heads nails, rivets, etc., esp. a machine for heading.(noun)

  source: webster1913