Wiktionary
n. (alternative form of Dagwood sandwich English)
n. 1 (context informal English) An exceptionally thick sandwich made with numerous layers of various meats, cheeses, vegetables, and condiments. 2 (context figuratively by extension English) A thick stack of flat objects or a complicated melange of diverse components or ingredients.
Wikipedia
A Dagwood (sandwich) is a tall, multi-layered sandwich made with a variety of meats, cheeses, and condiments. It was named after Dagwood Bumstead, a central character in the comic strip Blondie, who is frequently illustrated making enormous sandwiches. According to Blondie scripter Dean Young, his father, Chic Young, began drawing the huge sandwiches in the comic strip during 1936.
Usage examples of "dagwood sandwich".
Setting a course for land, he put the boat on autopilot and went below to reward himself with what they used to call a Dagwood sandwich when he was a kid.
The gold was thick as butter in a Dagwood sandwich, greasy yellow-looking in the folds of rubber.