from The Century Dictionary and Cyclopedia
- n. In iron-works, the blast produced by a fan, in contradistinction to that produced by a blowing-engine.
Sorry, no etymologies found.
With a high whine the machine shot down the road, its fan-blast making its rider's plaited hairdo point horizontally backward.
In this case fan-blast air is used for cooling, and this is cheaper and more satisfactory because a great volume may be used.