peak
/piːk/
A point; the sharp end or top of anything that terminates in a point; as, the peak, or front, of a cap.
The highest value reached by some quantity in a time period.
The stock market reached a peak in September 1929.
The top, or one of the tops, of a hill, mountain, or range, ending in a point.
They reached the peak after 8 hours of climbing.
The whole hill or mountain, especially when isolated.
The upper aftermost corner of a fore-and-aft sail.
peak-brails
The narrow part of a vessel's bow, or the hold within it.
The extremity of an anchor fluke; the bill.
A local maximum of a function, e.g. for sine waves, each point at which the value of y is at its maximum.