an old children’s song. Each verse refers to a different animal on Old Macdonald’s farm and repeats the sound made by that animal and all the previous ones, so that the verses get longer and longer.
OLD MACDONALD HAD A FARM
Meaning of OLD MACDONALD HAD A FARM in English
Oxford guide to British and American culture English vocabulary. Руководство по британской и американской культуре, Оксфордский английский словарь. 2005