heartwood
🇺🇸
/ˈhɑːrtwʊd/
🇬🇧
/ˈhɑːtwʊd/
The central, older, and harder part of a tree's trunk or branch that no longer carries water or nutrients.
The furniture was made from the dense and durable heartwood of a centuries-old oak tree.
这件家具是由一棵已有几个世纪历史的橡树的致密耐用的木心制成的。