Dictionary
or•chil
Pronunciation: (ôr'kil, -chil), [key]—
n.
1. a violet coloring matter obtained from certain lichens, chiefly species of
Roccella.
2. any lichen yielding this dye. Also called
archil, orseille. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.