peak; highest point; busiest or most intense point
Used for the highest, maximum, or most intense point of a quantity, activity, season, popularity, traffic, and similar things. Common in phrases such as ピークを迎える and ピークに達する.
Sales reach their peak in summer.
The peak of the traffic congestion is around five in the afternoon.
This song's popularity reached its peak last year.
It seems the summer heat has passed its peak.
Experts say the number of infections is approaching its peak.
Last month, electricity demand recorded an all-time peak.