The Collaborative International Dictionary of English v.0.48:
Plantain \Plan"tain\, n. [F., fr. L. plantago. Cf. Plant.]
Any plant of the genus Plantago, but especially the
Plantago major, a low herb with broad spreading radical
leaves, and slender spikes of minute flowers. It is a native
of Europe, but now found near the abode of civilized man in
nearly all parts of the world.
Indian plantain. (Bot.) See under Indian.
Mud plantain, a homely North American aquatic plant
(Heteranthera reniformis), having broad, reniform
Rattlesnake plantain, an orchidaceous plant (Goodyera
pubescens), with the leaves blotched and spotted with
Ribwort plantain. See Ribwort.
Robin's plantain, the Erigeron bellidifolium, a common
daisylike plant of North America.
Water plantain, a plant of the genus Alisma, having acrid
leaves, and formerly regarded as a specific against