choke·point or choke point 
(chōkpoint′)
(chōkpoint′)n.
1. A narrow passage, such as a strait, through which shipping must pass.
2. A point of congestion or obstruction.
- monospermous
- monostand
- monostich
- monostome
- monosulfide
- monosyllabic
- monosyllabically
- monosyllable
- monosynaptic
- monosynaptically
- monotheism
- monotheist
- monotheistic
- monotheistically
- monothematic
- monotherapy
- monotint
- monotone
- monotonic
- monotonically
- monotonous
- monotonously
- monotonousness
- monotony
- monotrematous