A2
a small, colored rubber bag that you blow air into or fill with air until it is round in shape, used for decoration at parties or as a children's toy
Dictionary examples:
I blew up so many balloons, my cheeks look like balloons now! (0.0)
I tied balloons to my shoes. Now I can't walk! (0.0)
I filled the balloons with helium. Now my voice sounds funny! (0.0)
We tied balloons and streamers to the ceiling ready for the party. (63.9)