lunch hour
noun [ C ] uk/ˈlʌntʃ ˌaʊər/ us/ˈlʌntʃ ˌaʊr/ (also lunch break)
午餐时间，午休时间
the period in the middle of the day when people stop work to have lunch
I did it during my lunch hour. 我在午餐时间做了此事。
UK also I did it in my lunch hour. 我在午餐时间做了此事。