Crest/krest/ Definition 1 of 4Pro Tip 1/3Natural Landmarks Used to describe high points in nature, often providing a good viewpoint. After a long hike, they stood on the crest, enjoying the panoramic view. Pro Tip 2/3Metaphorical Uses Can describe high points in situations or abstract concepts, like a career. She was at the crest of her professional life. Pro Tip 3/3Wave Dynamics In surfing or sea-related contexts, it refers to the top of a wave. The surfer rode right to the crest of the wave before it broke.