Type genus of the Juglandaceae

Wikipedia Word definitions in Wikipedia
Walnut trees are any species of tree in the plant genus Juglans , the type genus of the family Juglandaceae , the seeds of which are referred to as walnuts . All species are deciduous trees , tall, with pinnate leaves , with 5–25 leaflets; the shoots have ...

Wiktionary Word definitions in Wiktionary
n. The walnut and similar trees of the genus ''Juglans''

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Juglans \Jug"lans\, n. [L., walnut.] (Bot.) A genus of valuable trees, including the true walnut of Europe, and the America black walnut, and butternut.