Ring a ring o' rosesˌRing a ˌring o' ˈroses noun 
a children’s singing game in which the children join hands and dance round in a circle singing: Ring a ring o'roses/A pocket full of posies/A-tishoo! A-tishoo!/We all fall down. It is believed to come from the time when there was a plague in London (=a very serious infectious disease, quickly causing death to large numbers of people), because when people coughed and sneezed ( sneeze ), saying ‘atishoo’, it was a sign that they had caught the plague.
a children’s singing game in which the children join hands and dance round in a circle singing: Ring a ring o'roses/A pocket full of posies/A-tishoo! A-tishoo!/We all fall down. It is believed to come from the time when there was a plague in London (=a very serious infectious disease, quickly causing death to large numbers of people), because when people coughed and sneezed ( sneeze ), saying ‘atishoo’, it was a sign that they had caught the plague.