Tube dream meaning is explained below using 1 different source. Each interpretation is shown with its source.
Interpretation 1 — Martha Clarke
This is the conductor for where things flow. In this sense, it could symbolize a means of obtaining richness or intellectual growth.
If you see yourself inside a tube, on the other hand, the meaning is very similar to that of a corridor: You are in a time of transition. The path could end well or poorly, depending on the feeling that you experience in the dream.
Source: The Big Dictionary of Dreams • Author: Martha Clarke