Bible Dictionaries
Vortex Fringe

Webster's Dictionary

The region immediately surrounding a disk moving flatwise through air; - so called because the air has a cyclic motion as in vortex ring.

Bibliography Information
Webster, Noah. Entry for 'Vortex Fringe'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​v/vortex-fringe.html. 1828.