Bottleneck

a narrow entrance or passageway.
a place or stage in a process at which progress is impeded.
Also called slide guitar. a method of guitar playing that produces a gliding sound by pressing a metal bar or glass tube against the strings.
to hamper or confine by or as if by a bottleneck.
to become hindered by or as if by a bottleneck.
Contemporary Examples

The Secrets of Succession Dan Lyons August 25, 2011
Slamming the Door on Gitmo Andrew Cohen October 20, 2009
Pipelines, Not Rail, Ctd. Justin Green April 9, 2013

Historical Examples

On-Line Data-Acquisition Systems in Nuclear Physics, 1969 H. W. Fulbright et al.
State of the Union Addresses of Harry S. Truman Harry S. Truman

noun

a narrow stretch of road or a junction at which traffic is or may be held up
the hold up

something that holds up progress, esp of a manufacturing process
(music)

the broken-off neck of a bottle placed over a finger and used to produce a buzzing effect in a style of guitar-playing originally part of the American blues tradition
the style of guitar playing using a bottleneck

verb
(transitive) (US) to be or cause an obstruction in
noun
n.
bottleneck
(bŏt’l-něk’)
An abrupt and severe reduction in the number of individuals during the history of a species, resulting in the loss of diversity from the gene pool. The generations following the bottleneck are more genetically homogenous than would otherwise be expected. Bottlenecks often occur in consequence of a catastrophic event.