From Longman Dictionary of Contemporary EnglishSanta ClausSan‧ta Claus /ˈsæntə klɔːz $ ˈsænti klɒːz, ˈsæntə-/ (also Santa) noun [singular] RFan imaginary old man with red clothes and a long white beard who, children believe, brings them presents at Christmas SYN Father Christmas British EnglishOrigin Santa Claus (1700-1800) Dutch Sinterklaas, from Sint Nikolaas “Saint Nicholas”, patron saint of children