plural of maledicta balloon

plural of balloon vine

a club for ballooning enthusiasts

plural of trial balloon

mail (usually for weight reasons in the form of a postcard) carrying the name of the sender by means of an unguided hydrogen- or helium-filled balloon.

plural of barrage balloon

(aeronautics, historical) A small balloon released into the sky to determine the direction and tendency of winds in the upper air before a manned ascent in a larger balloon; a ballon d'essai.

plural of weather balloon

weather balloon

A flowering vine with large, hollow seedpod and round seeds featuring a heart-shaped mark; Cardiospermum halicacabum