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English definition of “peak”

peak

noun [C]
 
 
/piːk/
HIGHEST LEVEL B2 the highest level or value of something: Here we see an athlete at the peak of fitness. The price of gold reached its peak during the last recession. peak travel times Higher and lower points of achievementSuccess and achievementsFailures
MOUNTAIN TOP B1 the top of a mountain, or the mountain itself: snow-covered/mountain peaks Edges and extremities of objectsSurfaces of objectsHills and mountains
(Definition of peak noun from the Cambridge Learners Dictionary © Cambridge University Press)
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