"Go ahead and have a good time with your pipe-dream, Abe," Morris said.
"Sounds like a pipe-dream," commented Matt, when his chum had finished.
The notion that the trombonist had given a signal he derided as an "Old Sleuth pipe-dream."
But how among countless suggestions is a "cause" to know the difference between a true invention and a pipe-dream?
I have been trying to believe that what he told me isn't altogether a pipe-dream, but it sounds mightily like one.
An improbable and visionary hope, ideal, scheme, etc, such as an opium smoker might have: He has some ambitious plans, mostly pipe dreams (1896+)