[f. BALLOON + -ER1.]
1. One who makes balloon ascents; an aeronaut.
1864. Athenæum, No. 1933. 631/3. The Godards, practised ballooners.
1882. Matt. Williams, Sc. in Short Chap., xxvi. 219. Not a mere sensational ballooner.
2. Naut. A balloon-like sail.
1883. Times, 27 Aug., 8/2. The Marjorie [had] her ballooner aloft.
1884. Field, 24 May, 722. Tara put up her ballooner.