a male assistant who does many different kinds of work 得力的男助手；男仆 CultureMan Friday is a character in Daniel Defoe's novel Robinson Crusoe. He becomes Crusoe's faithful servant after Crusoe saves him from being eaten by cannibals.Word Originfrom Friday, a character in Defoe's novel Robinson Crusoe (1719), whom Crusoe often refers to as “my man Friday”.