(anatomy) The normally sharp demarcation between the lip (red-coloured) and the adjacent normal skin, representing the change in the epidermis from highly keratinized external skin to less keratinized internal skin.

A national border where entry and exit is regulated by means of technology, such as biometrics.

A herding dog of a breed originating near the border between England and Scotland, and specifically bred for intelligence and obedience.

A broadcast station used to target listeners in another country, despite not being licensed to do so.

plural of border blaster

The microvilli-covered surface of simple cuboidal epithelium and simple columnar epithelium cells found in certain parts of the body.

plural of border reiver

plural of border guard

A national agency that enforces the security of the country's national borders. / A person assigned to watch, protect or control the frontier between two sovereign states.

A vigorous style of traditional English dance originating from villages along the border between England and Wales, performed by a team of dancers usually with their faces disguised with black makeup.