: an occasion when the sun looks like it is completely or partially covered with a dark circle because the moon is between the sun and the Earth
: an occasion when the moon looks like it is completely or partially covered with a dark circle because the Earth's shadow is on it
: a loss of power, success, popularity, etc.
: to cause an eclipse of (the sun or moon)
: to make (something) less important or popular
: to do or be much better than (someone or something)
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