bollgång
Bollgång is a historical architectural term used in Swedish and Nordic texts to describe a covered or protected passage that runs along a building, fortress, or ship. The word is encountered in studies of military architecture, urban design, and historic building descriptions, and its exact meaning can vary between sources and time periods.
In medieval and early modern contexts, bollgångs were designed to allow guards, messengers, or workers to move
The term also appears in maritime or harbor-related descriptions, where similar sheltered passages enabled crew movement
Today, bollgång is primarily of historical interest and is used mainly in scholarly writings, architectural histories,