peak1

noun

• 1the pointed top of a mountain: tatters of fog clung to the peak of the mountain
• a mountain with a pointed top: he climbed his last Swiss peak at the age of 80

• 2a projecting pointed part or shape:whisk two egg whites to stiff peaks
• British a stiff brim at the front of a cap.
• the narrow part of a ship’s hold at the bow or stern: further storage is found in the bow peak
• the upper, outer corner of a sail extended by a gaff: [as modifier]:the peak halyard

• 3the point of highest activity, quality, or achievement:he was at his peak as a cricketer package holiday sales hit a peak of around 12 million
• a point in a curve or on a graph, or a value of a physical quantity, higher than those around it: a slight increase in velocity provides a second peak on the general velocity curve

verb

• reach a highest point, either of a specified value or at a specified time:the disease peaked in summer

adjective

• at the highest level; maximum:the canal was restored to peak condition
• characterized by maximum activity or demand:traffic speeds are reduced at peak hours