Pillar, pipe and tube share this form, so the cylinder is read as steady support or as a channel through which something flows. A hollow one points to a passage; a solid one to quiet endurance.
Does the traditional reading fit your dream, or did it mean something else to you?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.