zwieback means: Mennonites make a type of bun that is twice baked. You will not be able to spread butter onto one of these buns, since it already has butter in. However, jam is acceptable and expected. You can also dip them in coffee, or eat them as a sandwich with cheesemeatpickles. Their strange shape may remind you of your little grandma, a matryoshka doll, or a boob. (in Community Dictionary, added by Marcos Hidalgo)

What else does zwieback mean?

  • This is a sweetened bread that’s first baked in a loaf form and then cut into pieces and toasted. (in AZ Dictionary)