Iceberg
A mountain of ice floating in the sea — visible mass with most of the body kept under water.
An iceberg in a dream is the dream's image of a presence whose visible part is only a fraction of what is there. Most of the iceberg is below the waterline; what shows is the indication. The dream brings the iceberg when something in your life — a person's mood, an institutional problem, an internal grief — is showing a small visible piece, and the larger body is currently submerged where it can be neither seen nor steered around without effort. An iceberg given a wide berth on the chart is the dream affirming that the size of the hidden part has been respected. An iceberg approached casually because it looks small from this angle is the dream warning that the visible tip was never the object, and the hull is about to meet what was always there.