What is "nachzehrer"

A nachzehrer is a sort of German vampire. Nachzehrer translates "after (nach) living off (zehre)" likely alluding to their living after death or living off humans after death in addition to the choice of "nach" for "after" which is similar to "nacht" ("night"). The nachzehrer was prominent in the folklore of the northern regions of Germany, but even in Silesia and Bavaria, and the word was also used to describe a similar creature of the Kashubes of Northern Poland.