wolfram /wŭlˈfrəm/

1. (also wolfˈramite) a native compound of tungstate of iron and manganese
2. Tungsten

• burrowed
• burrowing
• burrowing-owl
• burrowing-owls
• burrows
• burrowstown
• burrowstowns
• burrs
• burrstone
• burrstones
• burry
• burs
• bursa
• bursae
• bursal
• bursar
• bursarial
• bursaries
• bursars
• bursarship
• bursarships
• bursary
• Bursch
• Burschen
• Burschenism