huge tree; giant tree
Refers to a tree of exceptionally large size, often ancient or monumental. Used in both literal and figurative contexts.
A thousand-year-old giant tree stands in the shrine grounds.
That huge tree is cherished as a symbol of the forest.
巨木 emphasizes a massive, thick trunk, while 大樹 can refer to overall size including height and spread without stressing thickness.
Compound of 巨 (huge) and 木 (tree). The reading きょぼく is the on'yomi of both characters.