Chaffy grain beneath the thresher's flail.
--Coleridge.
2. Light or worthless as chaff.
Slight and chaffy opinion. --Glanvill.
3. (Bot.)
(a) Resembling chaff; composed of light dry scales.
(b) Bearing or covered with dry scales, as the under
surface of certain ferns, or the disk of some
composite flowers.