type of plant (in modern use Rubia tinctorum) yielding a valuable dyestuff, Old English mædere and Old Norse maðra, from PIE *modhro- "dye plant" (source also of Old High German matara "madder," Polish modry, Czech modry "blue").
madame
madarosis
madcap
madden
maddening
madder
madding
maddish
made
Madeira
Madeleine