Definitions

1. noun

The highest or most prominent line of something, especially a ridge or the edge of a mountain range.

“The hikers began their ascent from the crestline of the mountain, where they could see for miles in every direction.”

2. noun

A line or border of something, such as a wave or a roof, that forms a prominent edge or curve.

“The crestline of the wave crashed against the shore, causing the surfers to paddle harder to catch the next big one.”

3. noun

A line or boundary that represents the highest or most prominent point of something, such as a temperature or a level.

“The doctor explained that the patient’s fever had reached the crestline of 104 degrees, but it was expected to subside soon.”