Hallimasch

Etymology
Early 19th century, from Austro-Bavarian and Bohemian dialects, of further origin. The two main theories are:
 * From a metathesis of with the ending influenced by the  nominal suffix.
 * From, from , from , referring to the mushroom’s laxative effect. (Such interpretation is definitely attested, but might be folk etymology.)

Noun

 * 1) honey fungus, armillaria