A yellow dyestuff obtained from the foliage of the dyer's broom (Reseda luteola).
l[=u]'t[=e]-[=o]-lin, n. the yellow colouring matter of weld or dyer's weed.--adjs. LUT[=E]'OLOUS, yellowish; L[=U]'TEOUS, golden-yellowish. [L. lutum, weld.]
A substance said to have been found in Digitalis purpurea.