[tohd-flaks] 
| 1. | a common European plant, Linaria vulgaris, of the figwort family, having narrow leaves and showy yellow-and-orange flowers, naturalized as a weed in the U.S. |
| 2. | any plant of the same genus. |
| but·ter-and-eggs (bŭt'ər-ən-ěgz') pl.n. (used with a sing. or pl. verb) A weedy perennial herb (Linaria vulgaris) native to Eurasia, having narrow leaves and racemes of showy, long-spurred yellow and orange flowers. Also called toadflax. |
| toad·flax (tōd'flāks') n.
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toadflax
any member of a genus (Linaria) of nearly 150 herbaceous plants native to the North Temperate Zone, particularly the Mediterranean region. The common name refers to their flaxlike leaves; the flowers are two-lipped and spurred like snapdragons. Among the prominent members are common toadflax, or butter-and-eggs (L. vulgaris), with yellow and orange flower parts. Native to Eurasia, it is now widely naturalized in North America. Blue, or old-field, toadflax (L. canadensis) is a delicate light-blue flowering plant found throughout North America. From North Africa come the cloven-lip toadflax (L. bipartita) and purple-net toadflax (L. reticulata), both of which have purple and orange bicoloured flowers
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