n.

1. 胡桃；胡桃树[C]
   The meat of the walnut can be used in cakes.

   做蛋糕时可用胡桃肉。

2. 胡桃木[U]
   The table is made of walnut.

   这桌子是由胡桃木做的。

3. 胡桃色，茶色[U]

n.

1. an edible wrinkled nut enclosed by a hard shell, produced inside a green fruit.
2. the tree which produces walnuts, with compound leaves and valuable wood. [Juglans regia and related species.]