What is breadcrumb navigation?

Breadcrumb navigation (also referred to as a ‘breadcrumb trail’), locates the current webpage in the context of a navigation path.

Aside from the common form, use of the term ‘breadcrumb’ then diverges:

breadcrumb as a presentation format
Navigation displayed in a single-line, suggesting a progression from left to right.

Example: Home > breadcrumb

breadcrumb navigation as a dynamic transcript

A visible record of the decisions made by person when moving around a website, similar in function to the browser History.