Google Search uses breadcrumb markup in the body of a web page to categorize the information from the page in search results. How to add structured data · Examples · Guidelines · Structured data type definitions
Google uses structured data to understand the content on the page and show that content in a richer appearance in search results, which is called a rich result.
A BreadcrumbList is an ItemList consisting of a chain of linked Web pages, typically described using at least their URL and their name, and typically ending ...
If you go to Store Settings -> Display -> Product Breadcrumbs, and choose Show All, it displays multiple breadcrumb paths as you can see from ...