| n. | 1. | |
| 1. | A violent windstorm of limited extent, as the tornado, characterized by an inward spiral motion of the air with an upward current in the center; a vortex of air. It usually has a rapid progressive motion. | |
| 2. | Fig.: A body of objects sweeping violently onward. |
| Noun | 1. | whirlwind - a more or less vertical column of air whirling around itself as it moves over the surface of the Earth |
| (computer) | Whirlwind - An early computer from the MIT Research Laboratory for Electronics. Whirlwind used electrostatic memory and ran Laning and Zierler (1953); and ALGEBRAIC, COMPREHENSIVE and SUMMER SESSION (all 1959). |