Which doesn’t fit in this group: breakfast, lunch, dinner, pajamas, supper?
pajamas (not a meal)
dinner 和supper是英文中同指晚餐的两个名词。dinner一词常用来表示一天中的正餐（main meal）它既可以是晚餐，也可以是午餐。英语国家中晚餐一般是一天中最为丰富的一餐，因此，dinner常用来指晚餐。此外，dinner一词比较正式，邀请朋友赴晚宴常用。supper 晚饭（多指家常的、非正式的晚饭），在苏格兰地区，supper可用来制普通百姓比较简单、比较晚的一餐。supper还固定用来指圣经中耶稣受难前的最后一次晚餐——lord’s supper或last supper.
A pair of pyjamas consists of loose trousers and a top that people wear to bed. 睡衣
Origin of pajamas
The word “pajamas” comes from the Indian word “piejamah,” which described loose pants that were tied at the waist. The comfy trousers were admired by British colonials as the perfect thing to wear when napping in the afternoon, and it wasn’t long before the outfit was deemed perfect for any time spent asleep. When the colonials returned to Britain, the trend caught on.