大だい径けい木ぼく

noun

large-diameter tree; stout tree

Technical term in forestry and arboriculture, typically referring to trees with a trunk diameter of 70 cm or more.

• この森もりには大だい径けい木ぼくが多おおく残のこっている。

  Many large-diameter trees remain in this forest.

• 大だい径けい木ぼくの伐ばっ採さいには特とく別べつな許きょ可かが必ひつ要ようだ。

  Special permission is required to fell large-diameter trees.