American EnglishAmEDF a lunch (=a mealeaten in the middle of the day) that you take to school or work with you in a lunchbox 〔带去学校或工作场所的〕午餐盒饭,盒装午餐SYN British English packed lunch
Examples from the Corpus
box lunch• Cost of the program, which includes a box lunch, is $ 60, or $ 35 for students.