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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.
(Plants) (functioning as singular) any of various plants, such as toadflax, the flowers of which are of two shades of yellow
n., pl. but•ter-and-eggs. (used with a sing. or pl. v.)
any of several plants whose flowers are of two shades of yellow, as the toadflax.
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|Noun||1.||butter-and-eggs - common European perennial having showy yellow and orange flowers; a naturalized weed in North America|
flower - a plant cultivated for its blooms or blossoms