tacamahac /takˈə-mə-hak/, also tacmahack /takˈmə-hak/

1. A gum-resin yielded by several tropical trees
2. The balsam poplar, or its resin

• cost-accounting
• cost-accounts
• costae
• costal
• costalgia
• costalgias
• costals
• cost an arm and a leg
• co-star
• costard
• costardmonger
• costards
• Costa Rican
• Costa Ricans
• co-starred
• co-starring
• co-stars
• costate
• costated
• cost-benefit analysis
• cost-benefit assessment
• cost centre
• cost centres
• coste
• costean