eclipseyoudaoicibaDictYouDict[eclipse 词源字典]
eclipse: [13] From the point of view of the observer, an object which has been eclipsed has ‘gone away’ – is no longer there. And that in fact is the etymological foundation of the word. It comes, via Old French and Latin, from Greek ékleipsis, a derivative of ekleípein ‘no longer appear or be present’. This was a compound verb formed from the prefix ek- ‘out, away’ and leípein ‘leave’ (a distant relative of English leave).

Its adjectival derivative, ekleiptikós, passed into English as ecliptic [14], which was applied to the apparent path of the Sun relative to the stars because that is the line along which eclipses caused by the moon occur.
=> leave[eclipse etymology, eclipse origin, 英语词源]
eclipse (n.)youdaoicibaDictYouDict
c. 1300, from Old French eclipse "eclipse, darkness" (12c.), from Latin eclipsis, from Greek ekleipsis "an eclipse; an abandonment," literally "a failing, forsaking," from ekleipein "to forsake a usual place, fail to appear, be eclipsed," from ek "out" (see ex-) + leipein "to leave" (cognate with Latin linquere; see relinquish).
eclipse (v.)youdaoicibaDictYouDict
late 13c., "to cause an eclipse of," from Old French eclipser, from eclipse (see eclipse (n.)).Figurative use from 1570s. Also in Middle English in an intransitive sense "to suffer an eclipse," now obsolete. Related: Eclipsed; eclipsing.