noun
chinquapin; Castanopsis tree
Refers to any tree of the genus Castanopsis, a type of beech family tree found in East Asia. Often written in kana.
See also: 椎
しいの木はどんぐりに似た実をつける。
The chinquapin tree bears acorn-like nuts.
公園に大きなしいの木が立っている。
A large chinquapin tree stands in the park.
Compound of 椎 (shii, 'chinquapin') + の (possessive particle) + 木 (ki, 'tree'). The reading しい is of uncertain origin, possibly from Old Japanese.