noun (n)

• (parliament) a parliamentary procedure of demanding that a government official explain some act or policy(noun.communication)

  source: wordnet30
• the action of interjecting or interposing an action or remark that interrupts(noun.act)

  Synonym:
  interjection, interpolation, interposition
  

  source: wordnet30
• The act of interpelling or interrupting; interruption.(noun)

  source: webster1913