bottleneck

nouns

a narrowing that reduces the flow through a channel

the narrow part of a bottle near the top

bottleneck

is a type of (narrower)

something less than the whole of a human artifact

"the rear part of the house"; "glue the two parts together"

slow down or impede by creating an obstruction

"His laziness has bottlenecked our efforts to reform the system"

bottleneck

is a type of (narrower)

hinder or prevent the progress or accomplishment of

"His brother blocked him at every turn"

become narrow, like a bottleneck

"Right by the bridge, the road bottlenecks"

bottleneck

is a type of (narrower)

make or become more narrow or restricted

"The selection was narrowed"; "The road narrowed"