Ohrwurm

Etymology
From. In ancient times, dried and ground animals of the order Dermaptera were used to treat ear diseases, which resulted in the Late Latin name. Later the name was in error explained as “worm that enters the ear”.

Noun

 * 1) earwig any insect of the order
 * 2)  earworm a tune that pops up in one's memory all of the time
 * 1)  earworm a tune that pops up in one's memory all of the time
 * 1)  earworm a tune that pops up in one's memory all of the time