tab-delimited file: A file in which pieces of data are separated tabs. This file type can be opened in either a spreadsheet or word-processing program.

thread: A group of linked Internet messages that share a common subject.

Trading Assistant: Also referred to as a consignment seller; this is an eBay member who sells other people’s merchandise for a fee.

Trust & Safety: The eBay department that focuses on protecting eBay buyers and sellers from members who abuse the system. It issues warnings and policy changes, and in some cases, it cancels the memberships of system abusers.

Turbo Lister: An eBay tool that allows sellers to easily create and compile multiple listings on their computer and then upload the listings to eBay.