"Lunchbox sandwiches" refer to sandwiches that are packed in a lunchbox or packed lunch to be eaten later in the day, often during lunchtime. Full definition
The chipotle adds a subtle spiciness to the classic lunchbox sandwich. (atasteofmadness.com)
I realize it's only October, but we've come that point where my kids have reached the «point of no return» with lunchbox sandwiches. (cookincanuck.com)
Last Sunday, we made three of them, and used the leftover meat throughout the week for lunchbox sandwiches and after - school snacking. (familybites.ca)