Laburnum (noun)

1. A small European tree, Laburnum anagyroides, having clusters of yellow flowers and poisonous seeds.
2. A tree or shrub of the genus Laburnum, which includes the common laburnum and the golden chain tree.

Origin:

Late latin, from latin laburnum, from greek kykoron, from kykos cycus + koron crown.

Examples:

1. In the spring, the laburnum tree is covered in clusters of yellow flowers.
2. The laburnum tree is often grown for its beautiful, drooping clusters of yellow flowers.
3. The golden chain tree, a species of laburnum, is often grown as an ornamental tree.
4. The seeds of the laburnum tree are poisonous if ingested.
5. The laburnum tree is native to Europe, but can also be found in other parts of the world.