Pancake Day
noun [ C usually singular ] UK informal uk/ˈpæn.keɪk ˌdeɪ/ us/ˈpæn.keɪk ˌdeɪ/ (also Shrove Tuesday); (US informal Pancake Tuesday)
薄饼日（大斋期的前一日，按传统习俗要吃薄饼）
the day before Lent (= a religious period in the Christian religion) starts, when pancakes are traditionally eaten