GRE TOEFL IELTS peak Definition The pointed top of a mountain or the highest point of something. Example "They reached the peak just before sunrise." Sign in to save GRE Quiz → TOEFL Quiz → IELTS Quiz → ← peach pebble → Study tips featuring "peak" Audit Your Own Writing to Find Gaps Write GRE Words Into Your Own Sentences TOEFL Academic Vocabulary: Study by Topic Related words GRE swill GRE taper GRE testy GRE abacus SAT abase GRE abash GRE abate GRE abbreviate GRE abbreviation SAT abdicate SAT abdomen GRE abduct