Webster's Revised Unabridged Dictionary · 1913

Wisp

Wisp , noun

[Old English wisp, wips; probably akin to Dutch & German wisch, Icelandic visk, and perhaps to Latin virga a twig, rod. Compare Verge a rod, Whisk, n.]

1.
A small bundle, as of straw or other like substance.
In a small basket, on a wisp of hay. — Dryden
2.
A whisk, or small broom.
3.
A Will-o'-the-wisp; an ignis fatuus.
The wisp that flickers where no foot can tread. — Tennyson

Wisp , transitive verb

1.
To brush or dress, an with a wisp.
2.
To rumple. [Provincial English] — Halliwell