The Collaborative International Dictionary
Tourbillion
Tourbillion \Tour*bil"lion\, n. [F. torbillion a whirlwind,
tourbillion, fr. L. turbo, -inis, a whirl, whirlwind.]
An ornamental firework which turns round, when in the air, so
as to form a scroll of fire.
--G. Francis.
Wiktionary
tourbillion
n. (context archaic English) An ornamental firework that turns round in the air so as to form a scroll of fire.