The definition of collaborate means to work together.
To engage in economic cooperation
A large, dark-blue, cultivated variety of fox grape, used esp. for making juice and jelly
To give and get, do, feel, etc. reciprocally; interchange
Find another word for play-ball. In this page you can discover 6 synonyms, antonyms, idiomatic expressions, and related words for play-ball, like: collaborate, work together, stand together, cooperate, concord and reciprocate.