1. The hard, dense, central wood of a tree trunk, typically darker and more durable than the surrounding sapwood.
Usage: Plural form of heartwood.; Commonly used in forestry, woodworking, and timber industries.

Examples

• The heartwoods of oak and mahogany are prized for furniture making.
• Builders prefer heartwoods because they resist decay and insect damage better than sapwood.
• The darker heartwoods in the cross-section of the tree are visible in the growth rings.
• Different tree species produce heartwoods with varying colors and grain patterns.
• Heartwoods are more valuable than sapwoods in the timber market.