n.
Function: noun
Date: 1907
1 a : a narrow route b : a point of traffic congestion
2 a : someone or something that retards or halts free movement and progress b : IMPASSE c : a dramatic reduction in the size of a population (as of a species) that results in a decrease in genetic variation
3 : a style of guitar playing in which glissando effects are produced by sliding an object (as a knife blade or the neck of a bottle) along the strings ― called also bottleneck guitar