A person-sized, wearable billboard or advertisement consisting of two printed boards strung together so that they hang over the shoulders, or simply set out on a street.

To advertise or campaign using a sandwich board; to wear a sandwich board.

A sandwich made on a long roll split lengthwise.

A sandwich made with hard-boiled eggs mixed with mayonnaise. / A fried egg between two slices of bread, optionally with tomato ketchup or brown sauce.

(chemistry) any compound in which a metal atom is located between the faces of two planes of atoms, especially between two rings

plural of sandwich generation

The generation of people who are the children of baby boomers, whose lifestyle is governed by the fact that they must simultaneously care for the needs of their children and their own elderly parents.

(slang) A punch to the face, especially to the mouth.

(US, idiomatic) Someone or something that is not as it should be; something disorganized or unfinished.

(obsolete) Hawaiian Islands (an early name for the archipelago of nineteen Hawaiian Islands)