Wikipedia:Piped link
A piped link is a link like [[train station|station]], showing up as station: the link is labeled differently from the name of the article it links to, "Train station".
In the example the word "station" might be used in an article on trains; from the context it would be clear that a train station is meant. The piped link is more convenient to the user than a link station to the disambiguation page.
However, according to Wikipedia:WikiProject Music standards, a link labeled with a year only should link to the general year article, and, even in an article on music, not to the year-in-music article. See also Wikipedia talk:Music standards archive 1 and Talk:Bad Religion.
In the case of [[train station|railway station]], showing up as railway station, an alternative is simply using [[railway station]], showing up as railway station, and making that a redirect page.
The term "piped" refers to the use of the pipe character "|", which is named after an alternative use of it, see Pipe (computing).