Etymology
Compound wordStructure
fēi · to fly; swiftlyPictogram
A bird in flight: the body borne upward on a long rising stroke, a wing beating out to the side and a feather trailing.bái · white; in vain; freeRebus (phonetic loan)
An upraised thumb — the thick first of the fingers, its tip or nail marked at the top. (Minority readings: an acorn, or a human head.)Interpretation
flying whiteA compound, not a polyseme — 飛 (flight) + 白 (the bare white of the paper): the streaks of blank paper a fast, dry brushstroke leaves.
Sources: Wiktionary 飛白 · 维基百科:飞白 · Dong Chinese
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