swirr means A noise of something moving, like a swoosh or a whirr.
Etymology
Blend of swoosh + whirr.
noun
- A noise of something moving, like a swoosh or a whirr.“... who heard the swirr of their skirts as they struck the bushes, took possession of the abandoned fortress. The taller and slighter of the two picked up the fragments of the handkerchief, and, after examining them, passed to his companion one[…]”
verb
- To make such a noise.