Bottleneck

[Michiko]

Computer-related definition: A part of your [computer] internals is [slowing] your entire [system] down.

[Luis Fok]

The neck or mouth of a bottle.

[Mark Zuckerberg]

Bottleneck in Skiing. A narrow part of the trail where the terrain does not leave much room for more than one skier.

[Magaret]

A [bottleneck] is a point of [congestion] in a production system (such as an [assembly line] or a computer network) that occurs when workloads arrive too quickly for the production process to handle.

[Sarah]

A [co-worker] who takes [so long] to do their job they make every [project] take longer than it should.