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1. A narrowing that reduces the flow through a channel
   - constriction, chokepoint
    
2. The narrow part of a bottle near the top

1. Slow down or impede by creating an obstruction
   "His laziness has bottlenecked our efforts to reform the system"
    
2. Become narrow, like a bottleneck
   "Right by the bridge, the road bottlenecks"

Derived forms: bottlenecked, bottlenecking, bottlenecks

Type of: block, blockade, contract, embarrass, hinder, narrow, narrowing, neck, obstruct, part, portion, stymie, stymy [rare]

Encyclopedia: Bottleneck