Webster's Revised Unabridged Dictionary · 1913

Gromwell

Gromwell , noun

[Called also gromel, grommel, graymill, and gray millet, all prob. from French gr?mil, compare Welsh cromandi.]

(Botany) A plant of the genus Lithospermum (L. arvense), anciently used, because of its stony pericarp, in the cure of gravel. The German gromwell is the Stellera.