Santa Claus
noun uk/ˈsæn.tə ˌklɔːz/ us/ˈsæn.t̬ə ˌklɑːz/ (informal Santa); (also mainly UK Father Christmas); (US also Kris Kringle)
圣诞老人
the imaginary old man with long, white hair and a beard and a red coat who is believed by children to bring them presents at Christmas, or a person who dresses as this character for children
Go to sleep quickly or Santa Claus won't come! 快睡觉，要不然圣诞老人就不来了！