It's been weird/amusing observing how different age groups at my local chess clubs call pieces and concepts. The older group very much stays to the local Dutch terminology for both while the younger group (presumably influenced by youtube) tends to mix Dutch piece names with English concepts. So you can have a koning (king) that is being "skewered" by a koningin (Queen) on the tweede (second) rank.
It is called "Springer" (translates to: jumper) in German. Sometimes "Pferd" or "Ross" is also used (translates to: horse and steed, resp.). That's why "Knight's tour" is called "Springerproblem" or "Rösselsprung" (from "Ross") in German.
Hence the German academic publisher, Springer, which uses a knight as it's logo.
(Not to be confused with the much larger Axel-Springer publishers, nor the American academic Springer publisher.)
When I was younger, I always believed that the proper name was for the knight was "horse" (my primary language is English). I only figured it out when I was playing chess against my friend, and he was like, "horse? wth is that"