گزارش خطا در معنی کلمه 'the balloon goes up'

1 general:: The undertaking begins, as in He's going to announce his candidacy for mayor? the balloon goes up on Monday. This expression comes from World War I, when British artillery sent up a balloon to notify gunners to open fire, this visual signal being more reliable than courier or telephone. It was soon transferred to signal other kinds of beginning. [1915]