Bottleneck

An issue or situation that holds up the progress of a task or event. An example of a bottleneck can arise during a renovation programme: One activity, for example, during renovation is if hollow-tining is being carried out: This can hold up the start and progress of other activities, such as overseeding and top-dressing if the aeration machinery is old and inefficient and is prone to breaking down, or if the operative is poorly trained and experienced.