1. A small hill or mound: This is the most common definition. Hummocks can be formed by various natural processes, such as glacial erosion, windblown sand, or volcanic activity. They are typically small and rounded, often found in areas with uneven terrain.
2. A raised area in the ice: This definition is used in the context of sea ice. Hummocks are formed when ice sheets collide and pile up, creating uneven surfaces with ridges and bumps.
3. A pile of debris: This definition is less common, but it can refer to a small pile of material, such as wood, rocks, or garbage.
4. A specific type of terrain: In some regions, "hummock" can refer to a specific type of landscape characterized by rolling hills and valleys.
To understand the specific meaning of "hummock", it's important to consider the context in which it's used.
For example, if someone says "We saw a hummock in the distance", they are likely referring to a small hill. However, if they say "The icebreaker had to navigate through a field of hummocks", they are talking about raised areas in the ice.