I only learned this fine term today myself- it's that
navigation tool that looks like this at the top of a page:
Books > Fiction > Mystery etc.
Makes sense when you think about it, doesn't it?
who on earth gave it the name like "Breadcrumbs" ?????
An apt description is similar to the "you are here" maps you see in say a
shopping centre - a "pointer" of how to get to a certain point - in the case of
web sites it has links to the previous pages (or is like a mini site map of where
you've been/where you are in the site.)