pbjs Sandwiches with Jif, briefly Sandwiches that might have Smucker's and Jif: Abbr Meat-free sandwiches often found in lunch boxes: Abbr Kids' lunch faves, briefly Brown-baggers' lunches, briefly BLT alternatives Common lunchbox sandwiches, informally Many tykes' lunches Lunchbox staples, initially Simple sandwiches, simply School cafeteria sandwiches: Abbr Sandwiches with smooth or crunchy spreads, for short