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

(informal, vulgar) Something highly undesirable made triflingly more palatable by attempting to surround it with more tolerable things.

A particular kind of meat-and-cheese sandwich made on Cuban bread.

Used other than figuratively or idiomatically: see jam, sandwich. / (Britain, slang) (from the common UK colour scheme of white with a red reflective horizontal band) A police car.

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

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

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.

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

A sandwich made on a long roll split lengthwise.

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