1. Plural of greenheart; a tropical South American tree (Chlorocardium rodiei) with hard, durable wood used in shipbuilding and construction.
Usage: Primarily used in forestry and timber industries; Also refers to the wood itself
2. Plural of greenheart; a person who is passionate about environmental conservation and sustainability.
Usage: Informal usage; Often used in environmental or activist contexts

Examples

• The shipyard selected greenhearts for the hull because of their exceptional durability in saltwater.
• Greenhearts from the rainforest are increasingly protected by sustainable harvesting regulations.
• The organization recruited young greenhearts to lead their climate action campaign.
• Timber merchants prize greenhearts for their resistance to rot and marine borers.
• Several greenhearts organized a protest against deforestation in the Amazon region.