noun (n)

• a group of machine parts that fit together to form a self-contained unit(noun.artifact)

  source: wordnet30
• the act of constructing something (as a piece of machinery)(noun.act)

  Synonym:
  fabrication
  Antonym:
  disassembly, dismantlement, dismantling
  

  source: wordnet30
• a public facility to meet for open discussion(noun.artifact)

  Synonym:
  forum, meeting place
  

  source: wordnet30
• a group of persons who are gathered together for a common purpose(noun.group)

  source: wordnet30
• a unit consisting of components that have been fitted together(noun.artifact)

  source: wordnet30
• the social act of assembling(noun.act)

  Example:
  They demanded the right of assembly.
  

  Synonym:
  assemblage, gathering
  

  source: wordnet30
• A company of persons collected together in one place, and usually for some common purpose, esp. for deliberation and legislation, for worship, or for social entertainment.(noun)

  source: webster1913