The term "Tfoot" refers to a specific section in an HTML table, used to group footer content. It is part of the table structure, which includes elements like thead for the header and tbody for the body. The tfoot element typically contains summary information, such as totals or notes, that is relevant to the data presented in the table. In web development, using tfoot helps improve accessibility and organization. Screen readers can identify the footer content, making it easier for users to understand the table's context. Additionally, placing summary data in the footer allows for better presentation and clarity in data interpretation.