Definition: A type of secondary navigation used for wayfinding, orientation, and location within an application or website. Breadcrumbs prove to be especially helpful when landing on a page out of context or not arriving initially through a homepage.
Thought: Breadcrumbs are seen and used most often on large-scale website full of copious amounts of information, like e-commerce sites. This navigational is growing increasingly important because fewer people enter a website through the front door (i.e. the home page or landing page). In the age of powerful search engines, your user will likely come in through the back. It's very important that when your user arrives, she can orient herself immediately.