Runkoja

Runkoja is the plural form of the Finnish noun runko, a term used across several domains to refer to a central supporting structure or main body. The core sense ties to a framework, skeleton, chassis, or trunk, and runkoja is used when speaking of multiple such structures. The word is common in everyday language as well as in technical vocabulary.

In engineering, transportation, and construction the runko denotes the physical frame that supports components and determines overall stiffness and geometry. Examples include the car’s runko (chassis) and the runko of a bicycle (frame). In furniture and architecture the term can refer to the skeleton or main framework of a structure or product.

In biology and anatomy runko describes the central body or trunk of an organism. For humans or animals, runko can be understood as the torso; in plants and other organisms the term is used more loosely to denote the main axis or body of the organism, though more specialized terms are common in scientific contexts.

Figuratively, runko is used to describe the essential structure or framework of something. Phrases such as the runko of a plan, a document, a software project, or a narrative refer to its basic outline or skeleton, onto which details are added. The exact usage depends on field and context, but the unifying idea is a foundational, supporting framework.