The generic name for a stretch of road, invariably on a bluff overlooking a city or in the woods where teens park in order to makeout.

Just before the 17th century became the 18th century, there was a street in London that was called 'Gropecunte Lane', which can be considered the 'Olde English' equivalent of a modern day 'Lovers Lane'. The meaning of the word 'Gropecunte' is exactly what you think it is.