A Dictionary of Dream Symbols
by Eric Ackroyd
This may symbolize something that is obstructing the free flow of energy in your psyche - or, indeed, in your body. (Physical tension, as exponents of acupuncture or acupressure will tell you, commonly has psychological causes.) See also Block(age).
Dream Symbols in The Dream Encyclopedia
by James R. Lewis and Evelyn Dorothy Oliver
A bottleneck may mean the dreamer is squeezing through a tight situation.
