knight - definition and synonyms

noun [countable] 

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  1. 1
    in the past, a European soldier from a high social class who wore a suit of armour (=a metal suit) and rode a horse
    1. a.
      a man in the UK who has been given an honour called a knighthood and can use the titleSir’ before his name
  2. 2
    a piece in the game of chess shaped like a horse’s head