The definition of an earworm is a bit of music that stays in your head.
An example of an earworm is a catchy advertising jingle.
- See corn earworm.
- A melody or a portion of a piece of music that is involuntarily repeated in one's mind.
Origin of earwormSense 2, translation of German Ohrwurm, earwig, (musical) earworm : Ohr, ear + Wurm, worm.
- A tune that is stuck in one's head, especially as unwanted or repetitive.