red envelope
nounUK /ˌɹɛd ˈɛnvələʊp/ · US /ˌɹɛd ˈɛnvəˌloʊp/
Etymology From red + envelope, a calque of Chinese 紅包 /红包.
1
In Chinese communities, a decorated paper envelope, traditionally red, containing a gift of money (lucky money) presented during special occasions such as birthdays, weddings, and the Chinese New Year; also, the gift of money presented in such an envelope.