What is "parenzana"

The Parenzana or Porečanka (also in Croatian: Porečka; also in Slovene: Poreška; Italian: Parenzana) is one of the nicknames of a defunct narrow gauge railway (operating between 1902 and 1935) between Trieste and Poreč (at that time Parenzo, hence the name Parenzana), in present-day Italy, Slovenia and Croatia.