bottleneck (n.)
- abbreviation
- approach
- astringency
- asymptote
- bar
- barrier
- block
- blockade
- blockage
- canal
- catch
- cecum
- cervix
- channel
- choking
- circumscription
- clog
- coarctation
- compaction
- compression
- concentration
- concourse
- concurrence
- condensation
- confluence
- conflux
- congestion
- congress
- consolidation
- constipation
- constriction
- contraction
- contracture
- convergence
- converging
- cordon
- crossing
- curtailment
- curtain
- decrease
- defile
- determent
- deterrent
- difficulty
- diminuendo
- drawback
- embolism
- embolus
- focalization
- focus
- funnel
- gorge
- hang-up
- hazard
- hitch
- hourglass
- hub
- hurdle
- impasse
- impediment
- infarct
- infarction
- isthmus
- jam
- joker
- knitting
- meeting
- narrow
- narrowing
- narrows
- neck
- objection
- obstacle
- obstipation
- obstruction
- pass
- radius
- reduction
- rub
- shortening
- snag
- solidification
- stop
- stoppage
- strait
- strangulation
- striction
- stricture
- systole
- tangent
- throat
