zenith

Từ điển WordNet v3.1 - WordNet Dictionary

noun

the point above the observer that is directly opposite the nadir on the imaginary sphere against which celestial bodies appear to be projected (Freq. 1)
• Ant:
nadir
• Derivationally related forms:
zenithal
• Hypernyms:
celestial point
• Part Holonyms:
celestial sphere, sphere, empyrean, firmament, heavens,
vault of heaven, welkin