eclipse > define

Be greater in significance than.
- usage: "the tragedy overshadowed the couple's happiness"
- synonyms: overshadow, dominate
Cause an eclipse of (a celestial body) by intervention.
- usage: "The Sun eclipses the moon today"; "Planets and stars often are occulted by other celestial bodies"
- synonyms: occult

(v.i.) To suffer an eclipse.
(v.t.) To cause the obscuration of; to darken or hide; -- said of a heavenly body; as, the moon eclipses the sun.
(n.) The loss, usually temporary or partial, of light, brilliancy, luster, honor, consciousness, etc.; obscuration; gloom; darkness.
(n.) An interception or obscuration of the light of the sun, moon or other luminous body, by the intervention of some other body, either between it and the eye or between the luminous body and that illuminated by it. A lunar eclipse is caused by the moon passing through the earth's shadow; a solar eclipse, by the moon coming between the sun and the observer. A satellite is eclipsed by entering the shadow of its primary. The obscuration of a planet or star by the moon or a planet, though of the nature of an eclipse, is called an occultation. The eclipse of a small portion of the sun by Mercury or Venus is called a transit of the planet.
(v.t.) To obscure, darken or extinguish the beauty, luster, honor, etc., of; to sully; to cloud; to throw into the shade by surpassing.

by Webster's Revised Unabridged Dictionary