Definitions
1.noun(chiefly in the plural) A tiny piece of bread, either one that falls from bread as it is cut or eaten, or one made deliberately by crumbling bread.
2.noun(chiefly in the plural) A single link in a chain indicating the hierarchical location of a web page or similar, used as a navigation aid.
3.verbTo sprinkle breadcrumbs on to food, normally before cooking.
4.verbTo add navigational breadcrumbs to (a web page or user interface).
5.verbTo use clues or enticements to lead someone in the desired direction.