noun (n)

• an opening remark intended to secure an advantage for the speaker(noun.communication)

  Synonym:
  ploy
  

  source: wordnet30
• a maneuver in a game or conversation(noun.act)

  Synonym:
  ploy, stratagem
  

  source: wordnet30
• a chess move early in the game in which the player sacrifices minor pieces in order to obtain an advantageous position(noun.act)

  source: wordnet30
• A mode of opening the game, in which a pawn is sacrificed to gain an attacking position.(noun)

  source: webster1913