noun
1. Any of several trees or shrubs of the genus Laburnum, especially L. anagyroides, which is cultivated for its drooping clusters of yellow flowers.
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2. Irishman dwelling with Englishmen, was directed to have a bow of his own height made of yew, wych-hazel, ash, or awburne -- that is, laburnum, which is still styled "awburne saugh," or awburne willow, in many parts of Scotland.
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3. The windows were open, and the orioles were singing in the great elm-tree, and the laburnum was a bower of gold.
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4. Tabex tablets contain cytosine, a substance found in the seeds of a tree called laburnum that produces yellow pea-flowers, which mimics the effect of nicotine.
