Longman Dictionary English From Longman Dictionary of Contemporary English(as) dead as a dodo(as) dead as a dodocompletely dead or inactive, or no longer used → dodoExamples from the Corpus(as) dead as a dodo• The campaign was as dead as a dodo.• I wrote back, Paz said, I told him, Dada dead as dodo eat your hat. ldoceonline.com