bottleneck

In Italian, 'collo di bottiglia' is used both literally and metaphorically. Literally, it refers to the narrow part of a bottle, which restricts the flow of liquid. Metaphorically, it describes a point in a process where progress is slowed down or stopped due to constraints, often in contexts like manufacturing, supply chain management, or project management. It emphasizes the importance of identifying and addressing these bottlenecks to improve efficiency.