noun
1. : a balloon sent up to test air currents and wind velocity
2. : a project or scheme tentatively announced in order to test public opinion
trial balloons … leaked to the press — Don Pryor
— compare kiteflying
noun
1. : a balloon sent up to test air currents and wind velocity
2. : a project or scheme tentatively announced in order to test public opinion
trial balloons … leaked to the press — Don Pryor
— compare kiteflying
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012