English to English

noun (n)

• (of a ship or plane) sideways drift(noun.process)

  source: wordnet30
• a permissible difference; allowing some freedom to move within limits(noun.attribute)

  Synonym:
  allowance, margin, tolerance
  

  source: wordnet30
• The lateral movement of a ship to the leeward of her course; drift.(noun)

  source: webster1913