棄却[kikyaku] rejection
棄権[kiken] abstaining from voting
棄権者[kikensha] non-voter
棄言葉[sutekotoba] sharp parting remark
棄死[kishi] execution by decapitation, followed by public display of the body (form of punishment in ancient China)

棄世[kisei] death
棄背[kihai] giving up and turning back
棄約[kiyaku] breaking a promise
棄老[kirou] old person thrown away in the mountains
棄捐[kien] donation

老麺[raamen] ramen (Chinese-style noodles)
家老[karou] chief retainer
棄老[kirou] old person thrown away in the mountains
敬老[keirou] respect for the aged
敬老の日[keirounohi] Respect-for-the-Aged Day Holiday (third Monday in September)

元老[genrou] elder statesman
元老院[genrouin] (Roman) senate
故老[korou] old people
車海老[kurumaebi] kuruma prawn (Marsupenaeus japonicus)
寿老人[juroujin] god of longevity