Homonym: sub (Submarine)
A "sub" is a term commonly used to refer to a submarine sandwich, which is a type of sandwich made with a long roll of bread filled with various ingredients. These ingredients can include meats, cheeses, vegetables, and condiments, allowing for a wide variety of flavor combinations. The sandwich is often cut into smaller portions for easier handling and consumption.
In addition to its culinary meaning, "sub" can also refer to a substitute, such as a person who takes the place of another in a specific role or task. For example, a substitute teacher fills in for a regular teacher when they are unavailable. This term is used in various contexts, including sports and academics.