Bottleneck - Definition
bottleneck
n 1: a narrowing that reduces the flow through a channel [syn:
constriction, bottleneck, chokepoint]
2: the narrow part of a bottle near the top
v 1: slow down or impede by creating an obstruction; "His
laziness has bottlenecked our efforts to reform the system"
2: become narrow, like a bottleneck; "Right by the bridge, the
road bottlenecks"