From Longman Dictionary of Contemporary Englishpeakpeak1 /piːk/ ●●○ W3 noun [countable] 1 time [usually singular]BEST the time when something or someone is best, greatest, highest, most successful etcat something’s peak The British Empire was at its peak in the mid 19th century. Sales this month have reached a new peak. Most athletes reach their peak in their mid-20s. He’s past his peak as a tennis player. Oil production is down from its peak of two years ago.at the peak of something Hotel rooms are difficult to find at the peak of the holiday season. the peaks and troughs of the US economy (=high and low points)2 mountain a) DNSGthe sharply pointed top of a mountain snow-capped mountain peaks jagged peaks b) DNSGa mountain → summit Mount McKinley is Alaska’s highest peak.3 pointCF a part that forms a point above a surface or at the top of something Whisk the egg whites until they form stiff peaks.4 hatDCC especially British English the flat curved part of a cap that sticks out in front above your eyes syn visor American EnglishCOLLOCATIONS – Meaning 1: the time when something or someone is best, greatest, highest, most successful etcverbsbe at its peakThe strawberry season is now at its peak.be past your peakBy the next Olympics, she will be past her peak.reach a peak (also hit a peak informal)The traffic reaches a peak between 5 and 6 pm.The company’s stock hit a peak of about $23.fall from a peakVisitor numbers have fallen from a peak of 1.8 million per year to under 1 million.phrasespeaks and troughs (=high points and low points)Sales went through a number of peaks and troughs in the last fiscal year.COLLOCATIONS – Meaning 2: ADJECTIVES/NOUN + peaka mountain peakAll around are the spectacular mountain peaks of the Jungfrau region.the highest peakMount McKinley is Alaska’s highest peak.a snowy/snow-capped peakThe snow-capped peaks of the Sorondo mountain range provide a dramatic backdrop.a jagged peak (=with several sharp points)At first all I could see was the hazy black outline of a jagged peak.a rocky peakThe Castle is situated on a rocky peak.a distant peakThe mist cleared to reveal the distant peaks across the valley.
Examples from the Corpuspeak• Figures produced at a World Energy Conference showed that oil and gas production should reach a peak between 1985 and 2000.• The slopes and peaks were so heavily wooded with dark pines that from a distance the mountains actually looked black.• April, September and October are peak months for your ambitions.• Go to fast food places at peak hours, when extra cooks and cashiers are working.• the Alps' snow-covered peaks• We found no significant difference in peak recorded serum bilirubin concentrations between the groups.• The Dow Jones closed at 10215 points, about 10% down from its peak• Gold fever reached its peak nine years later with the discovery of the largest nugget in Colorado history.• The time of peak becomes progressively earlier.• At the peak of the sugar-boom of the early 1870s a mere 40,000 workers were employed in the Czech sugar-factories.reached ... peak• This habit also reached a peak in 1989.• Gold fever reached its peak nine years later with the discovery of the largest nugget in Colorado history.• Fonti was concerned about problems of access and coordination on the site now that it had reached peak activity.• In the 1630s the tobacco boom showed signs of having reached its peak.• He has no immediate plans to retire, having reached a peak in his career.• By 1920, trade union membership reached its inter-war peak of about 8 million.• Richmann tensed as the approaching engine noise reached a peak.• The number of passengers arriving by ship reached a peak in 1969.mountain peaks• All around are the spectacular mountain peaks of the Jungfrau region.• In his hand are the depths of the earth, and the mountain peaks belong to him.• It seemed to have collapsed on top of the horizon where its mists were blunting the mountain peaks.• Cloud lay thick across the lake, hiding the mountain peaks beyond.• You gain altitude constantly from the river lowlands until you are under the mountain peaks.• The mountain peaks and ridges clawed at the sky and Maggie stopped thinking altogether.• And its figuration is clearly seen: three mountain peaks, surrounded by the circle of the globe.