cat melodeon adjective2 •(Ireland, informal) Terrible, appalling; of very poor quality.We're fed up of festivals and funerals and Munster Finals with backs that were cat melodeon. — 1997 •(Ireland, informal) Cacophonous; raucous.The lights went down and the crowd went cat melodeon We were all revved up and ready to engage Having hitch hiked all the way from Minnesota Zimmerman was there before us on the stage — 2021