English

Definition of peak verb from the Oxford Advanced Learner's Dictionary

 

peak

 verb
verb
BrE BrE//piːk//
 
; NAmE NAmE//piːk//
 
Verb Forms present simple I / you / we / they peak
BrE BrE//piːk//
 
; NAmE NAmE//piːk//
 
he / she / it peaks
BrE BrE//piːks//
 
; NAmE NAmE//piːks//
 
past simple peaked
BrE BrE//piːkt//
 
; NAmE NAmE//piːkt//
 
past participle peaked
BrE BrE//piːkt//
 
; NAmE NAmE//piːkt//
 
-ing form peaking
BrE BrE//ˈpiːkɪŋ//
 
; NAmE NAmE//ˈpiːkɪŋ//
 
Trends
 
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[intransitive] to reach the highest point or value Oil production peaked in the early 1980s. Unemployment peaked at 17%. an athlete who peaks (= produces his or her best performance) at just the right time Wordfinderboom, decline, dip, fluctuate, level off/​out, peak, plateau, plummet, slump, trend See related entries: Trends Word Origin mid 16th cent.: probably a back-formation from peaked, variant of dialect picked ‘pointed’.
See the Oxford Advanced American Dictionary entry: peak