also bottle-neck, "narrow entrance, spot where traffic becomes congested," 1896; from bottle (n.) + neck (n.). Meaning "anything which obstructs a flow" is from 1922; the verb in this sense is from 1928.
His laziness has bottlenecked our efforts to reform the system
Right by the bridge, the road bottlenecks
bothersome
botony
Botox
botryo-
bottle
bottleneck
bottle-nose
bottom
bottom line
bottomless
bottom-most
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