landbridge

/L AE1 N D B R IH0 JH/
noun
  1. 1

    (biogeography) An isthmus or other land connection between what at other times are separate land masses.

  2. 2

    (travel) Travel by ferry from one country, via another country by road, then by another ferry crossing to a third country. An example is from Ireland by ferry to the UK, by road to the opposite coast, then ferry to France.

Source: https://en.wiktionary.org/wiki/land%20bridge, https://en.wiktionary.org/wiki/landbridge