id·i·o·syn·cra·sy

– noun
1. a characteristic, habit, mannerism, or the like, that is peculiar to an individual.
2. the physical constitution peculiar to an individual.
3. a peculiarity of the physical or the mental constitution.

Mjol·nir

– noun
1. the hammer of Thor, used as a weapon against the Jotuns, heard as thunder by humans.