The Collaborative International Dictionary
Ballooner
Ballooner \Bal*loon"er\, n. One who goes up in a balloon; an a["e]ronaut.
Wiktionary
ballooner
n. 1 balloonist 2 A type of sail
Usage examples of "ballooner".
I remembered the inevitable expressions of surprise with which, young Alpinists and ballooners, expecting the rim of the visible circle to fall away, see it rising around them in saucer-shape.
The information was not quite up-to-date, but the adventures of the first ballooners held me positively spellbound!