English to English

noun (n)

• the point of intersection of lines or the point opposite the base of a figure(noun.cognition)

  source: wordnet30
• the highest point (of something)(noun.location)

  Synonym:
  acme, apex, peak
  

  source: wordnet30
• A turning point; the principal or highest point; top; summit; crown; apex.(noun)

  source: webster1913