bento box

noun2

1. •
   A partitioned, traditionally lacquered, lunchbox in which a bento (“Japanese takeaway lunch”) is served.

   • My heart was filled with covetousness as I saw the fine old lacquer bento boxes which they produced after carefully removing many silk wrappings. — 1895
2. •
   Synonym of bento (“a Japanese takeaway lunch served in a box”).

   • NAGANO […] Bento boxes are a great value, and there is a full sushi bar as well. — 2005