Definition:Lailaps (lah'-ee-laps) Noun, Feminine - a Whirlwind, a large rotating circle of wind revolving from below upward.
Diagram: The word "great" modifies "whirlwind." The sign for "great" is a circle with a circumference of 4440 units. Therefore by circular logic, the sign of a "whirlwind" is a white circle of the same size. A whirlwind has the same sign as a "wind."