Mother's Day

Từ điển Oxford Advanced Learner 8th

ˈMother's Day [Mother's Day] BrE NAmE noun
a day on which mothers traditionally receive cards and gifts from their children, celebrated in Britain on the fourth Sunday in Lent and in the US on the 2nd Sunday in May

Culture:
In Britain mothers traditionally receive gifts and cards from their children. It was originally a day when servants were given a holiday to visit their families, taking gifts of flowers or a cake. In the US mothers traditionally receive gifts, etc. from their children and are taken by their family for a meal at a restaurant. A tradition practised by some Americans, though no longer common, is to wear a carnation (= a flower with a pleasant smell) on Mother’s Day, a coloured one if their mother is alive and a white one if she is dead.