noun
plural -balls
[count] :a small ball that contains a strong-smelling chemical and that is used to keep moths away from stored clothing
mothballs [plural] - used in phrases like in/into mothballs and out of mothballs to describe something that is stored without being used for a long time
verb
-balls; -balled; -balling
[+ obj] :to stop using (something) while keeping it to be possibly used in the future