"Third-Class" typically refers to a category of service or accommodation that is less expensive and offers fewer amenities compared to higher classes. In transportation, such as trains or ships, third-class passengers may have limited space and comfort, often sharing facilities with more people. This class is designed to be affordable for those with lower incomes. In historical contexts, such as during the Titanic disaster, third-class passengers faced significant challenges, including inadequate access to lifeboats. The term can also apply to various services, indicating a basic level of quality or service, often seen as a stepping stone to higher classes.