n. 1. The art or practice of managing balloons or voyaging in them; the sport of riding in balloons.
balloonry (archaic) [ 1913 Webster +PJC ]

2. (Stock Exchange) The process of temporarily raising the value of a stock, as by fictitious sales. [ U.S. ] [ 1913 Webster ]

(Zool.) A spider which has the habit of rising into the air. Many kinds (esp. species of Lycosa) do this while young by ejecting threads of silk until the force of the wind upon them carries the spider aloft. [ 1913 Webster ]