Definition of high tide noun from the Oxford Advanced Learner's Dictionary

 

high tide

 noun
noun
BrE BrE//ˌhaɪ ˈtaɪd//
 
; NAmE NAmE//ˌhaɪ ˈtaɪd//
 
[uncountable, countable] Coastlines and the sea, Travelling by boat or ship
 
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the time when the sea has risen to its highest level; the sea at this time You can't walk along this beach at high tide. (figurative) the high tide of Victorian prosperity (= the time when something is most popular or successful) compare flood tide, high water opposite low tide See related entries: Coastlines and the sea, Travelling by boat or ship
See the Oxford Advanced American Dictionary entry: high tide