noun (n)

• an organization of people (or countries) involved in a pact or treaty(noun.group)

  Synonym:
  alinement, alliance, coalition
  Antonym:
  nonalignment, nonalinement
  

  source: wordnet30
• the spatial property possessed by an arrangement or position of things in a straight line or in parallel lines(noun.attribute)

  source: wordnet30
• (astronomy) apparent meeting or passing of two or more celestial bodies in the same degree of the zodiac(noun.event)

  Synonym:
  conjunction
  

  source: wordnet30
• the act of adjusting or aligning the parts of a device in relation to each other(noun.act)

  source: wordnet30
• The act of adjusting to a line; arrangement in a line or lines; the state of being so adjusted; a formation in a straight line; also, the line of adjustment; esp., an imaginary line to regulate the formation of troops or of a squadron.(noun)

  source: webster1913