breadcrumb

noun

• 1a small fragment of bread.

• 2 (breadcrumbs or breadcrumb trail) a series of connected pieces of information or evidence:federal agents stood by in the hope that the trail of breadcrumbs would lead to a Mexican drug cartel you have to be careful about the digital breadcrumbs that you are leaving behind

  [from the traditional story of Hansel and Gretel, who leave a trail of breadcrumbs behind them as they walk through a forest, intending to use them in order to retrace their steps]
• a hierarchical series of hyperlinks displayed at the top of a web page, indicating the page’s position in the overall structure of the website:check to make sure that your site has good internal linking and consider adding breadcrumbs for breadcrumb trails, a smaller pixel size of 9 to 11 is good