noun

an obscuring of the light from one celestial body by the passage of another between it and the observer or between it and its source of illumination.

an eclipse of the sun

blotting out,blocking,covering,obscuring,hiding,concealing,veiling,shrouding,darkening,occultation

verb

(of a celestial body) obscure the light from or to (another celestial body).

Jupiter was eclipsed by the Moon