The word trait has several meanings:

• Generically, it refers to a characteristic or property of some entity.
• In biology, traits refer to genetically inherited features of organisms.
• In psychology, it refers to a component of personality as defined by Trait theory.
• In computer science, traits refer to several things:
  • In C++, a trait class is a class which is used to store metadata about some other datatype; typically for the benefit of templates.
  • In several object oriented programming languages, a trait is a type of abstract type.

Merkmal | Trait