duramen /dū-rāˈmən/ (botany)

Heartwood

• sparre
• sparred
• sparrer
• sparrers
• sparrier
• sparriest
• sparring
• sparring partner
• sparring partners
• sparrings
• sparrow
• sparrow-bill
• sparrow grass
• sparrow-grass
• sparrowhawk
• sparrowhawks
• sparrows
• sparry
• spars
• sparse
• sparsedly
• sparsely
• sparseness
• sparsenesses
• sparser