gg5: 彼は75歳でその栄辱こもごもの一生を終えた.　He died at age 75, ending a lifetime of veering between honor and disgrace.
     彼はその研究成果をだれにも知られないまま一生を終えた.　He ended his life without anyone knowing about the results of his research.
     短い一生を終える　end one's short life
中辞典: 人生半ばにして一生を終えた.　 She died in middle age.

I don't like that first gloss. Not sure we need this as an entry. It usually translates literally.

@@ -13,2 +13,3 @@
-<gloss>to spend the rest of one's days</gloss>
-<gloss>to end one's life (doing, being ...)</gloss>
+<gloss>to end one's life</gloss>
+<gloss>to end one's days</gloss>
+<gloss>to die</gloss>

GG5: 一生を終える［閉じる］ end ［close］ one's 「life ［career, days］; finish one's life
一生を終える	24979

https://eow.alc.co.jp/search?q=一生を終える
https://ejje.weblio.jp/sentence/content/一生を終え

「こうして男は村の住人として一生を終え、・・・・・・」