citrilPronunciation: /ˈsɪtrɪl/ (also citril finch)Definition of citril noun a small European and African finch related to the canary, with generally yellowish-green plumage. Genus Serinus, family Fringillidae: two species Origin: late 17th century: apparently from Italian citrinella, diminutive of citrina 'citrine-coloured (bird)'