名詞 pignut:

1. an American hickory tree having bitter nuts
   同義詞：pignut hickory, brown hickory, black hickory, Carya glabra

pig.nut

n.（名詞）
Either of two deciduous trees(Carya glabra or C. ovalis) of the eastern United States, having pinnately compound leaves, male flowers grouped in catkins, and nuts with somewhat bitter kernels.
光滑山核桃樹(shù)：美國(guó)東部的兩種落葉樹(shù)的一種（山核桃屬 光滑山核桃 或 山核桃屬 甜山核桃） ，有羽狀復(fù)葉、柔荑花序的雄花和核仁帶有苦味的堅(jiān)果
The nut of either of these trees.
光滑山核桃：這兩種樹(shù)任一種的果實(shí)
The wood of either of these trees.
光滑山核桃木：這兩種樹(shù)任一種的木材