twenty-three /ˈtwɛntiˈθɹiː/exclamation 1number 1 exclamation1 •(US, no longer used) Get lost; get out: leave. number1 •The cardinal number immediately following twenty-two and preceding twenty-four; 23.Avignon was twenty-three kilometres away, on the second-class road N 570. We could be there in about half an hour. And we were, without stopping to admire any antiquities. — 1953