Definitions from Wiktionary (breadcrumb)

▸ 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.
▸ noun:  (graphical user interface, chiefly in the plural) A single link in a chain indicating the hierarchical location of a directory, web page or similar, used as a navigation aid.
▸ noun:  (programming, chiefly in the plural) A fragment of data that serves to log the actions taken by a program, used in debugging.
▸ noun:  (figuratively, in the plural) One in a series of clues leading to a person or place.
▸ verb:  (transitive, cooking) To sprinkle breadcrumbs on to food, normally before cooking.
▸ verb:  (graphical user interface, intransitive) To add navigational breadcrumbs to (a web page or user interface).
▸ verb:  To use clues or enticements to lead someone in the desired direction.

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