1. a large floating mass of ice, detached from a glacier and carried out to sea.
2. Informal. an emotionally cold person.
3. Australian Informal. a person who swims or surfs regularly in winter. Idioms
4. tip of the iceberg, the first hint or revelation of something larger or more complex: The new evidence in the case is just the tip of the iceberg.
"lettuces can be iceberg."
This list can help you learn new vocabulary more quickly and be able explore other words more easily.