trial balloon (def 1).
In the autumn of 1916 the newspapers put forth a ballon d’essai.
Paris Vistas Helen Davenport Gibbons
This is no doubt what is technically known as a ballon d’essai.
Punch, or the London Charivari, Vol. 150, May 10, 1916 Various
That was a ballon d’essai, as they call it, and they think it was a very happy one.
Royal Highness Thomas Mann
And in the early morning she had sent her note to Kitty—a ballon d’essai, despatched in a horror of great fear.
The Marriage of William Ashe Mrs. Humphry Ward
noun (pl) ballons d’essai (bæˈlõ dɛˈseɪ)
a project or policy put forward experimentally to gauge reactions to it Compare trial balloon
the lightness and grace of movement that make a dancer appear buoyant. Contemporary Examples “Taking 20 pages of a book not released yet is less likely to be deemed fair use,” ballon said. The Legal Brawl Over Palin’s Book Shushannah Walshe November 21, 2010 Historical Examples And it was at this period that the expedient […]
an air or gasbag compartment in a balloon or airship, used to control buoyancy and maintain shape. Historical Examples The wind blowing against the opening, which faces it, charges the ballonet with air. Aeroplanes and Dirigibles of War Frederick A. Talbot The air pump, which should have pumped the ballonet full of air to keep […]
a broad leap with a battement to the front, side, or back.
a bag made of thin rubber or other light material, usually brightly colored, inflated with air or with some lighter-than-air gas and used as a children’s plaything or as a decoration. a bag made of a light material, as silk or plastic, filled with heated air or a gas lighter than air, designed to rise […]