'Bottleneck' definitions:

Definition of 'bottleneck'

(from WordNet)
noun
A narrowing that reduces the flow through a channel [syn: constriction, bottleneck, chokepoint]
noun
The narrow part of a bottle near the top
verb
Slow down or impede by creating an obstruction; "His laziness has bottlenecked our efforts to reform the system"
verb
Become narrow, like a bottleneck; "Right by the bridge, the road bottlenecks"

Definition of 'Bottleneck'

From: GCIDE
  • Bottleneck \Bot"tle*neck`\
  • 1. a location or situation in which otherwise rapid progress is impeded. [PJC]
  • 2. a point at which road traffic slows due to congestion or narrowing of the roadway. [PJC]
  • 3. an impasse. [PJC]
  • 4. a narrowing.
  • Syn: constriction. [WordNet 1.5]

Definition of 'bottleneck'

From: GCIDE
  • bottleneck \bottleneck\ v. i. to become narrower as one approaches a point; -- said of roads; as, right by the bridge, the road bottlenecks. [WordNet 1.5]

Definition of 'bottleneck'

From: GCIDE
  • bottleneck \bottleneck\ v. t. same as obstruct; as, his laziness has bottlenecked our efforts to reform the system. [WordNet 1.5]