noun
plural balls
[count] :a usually round object that is used in a game or sport or as a toy
[count] :something that has a round shape
[count] :a round bullet shot out of an old-fashioned gun
[count] :the rounded part of the human foot that is at the bottom of the foot and behind the toes - usually plural
informal + often offensive
[count] :testicle
usually plural
b balls [plural] :the courage that is needed to do something
c balls [plural] Brit :nonsense - often used as an interjection to express disapproval or annoyance;
[count] a sports :a ball that is thrown or hit
b baseball :a pitch that does not go through the proper area and that the batter does not swing at
carry the ball
US informal :to have the responsibility for doing something
drop the ball
US informal :to make a mistake especially by not doing something important
get/set/start the ball rolling
informal :to begin an activity or process
keep the ball rolling
informal :to cause an activity or process to continue
keep your eye on the ball
informal :to continue thinking about or giving attention to something important that you want to do or achieve
on the ball
informal :mentally prepared :aware of what is happening and ready to do what is needed or wanted
play ball
to begin or continue to play a game with a ball (such as baseball)
to do what other people want you to do :to cooperate or work with other people
the ball is in your court
If the ball is in your court, you are the person who is expected or required to do something.
verb
balls; balled; balling
[+ obj] :to form (something) into a ball
noun
plural balls
[count] :a large formal party for dancing
have a ball
informal :to have fun :to spend time in a very enjoyable way