fibula /fibˈū-lə/

1. A brooch in the shape of a safety pin
2. The outer and thinner of the two bones from the knee to the ankle in the human skeleton, or a corresponding bone in other animals

fibˈūlar adjective

• twiddle one's thumbs
• twiddler
• twiddlers
• twiddles
• twiddlier
• twiddliest
• twiddling
• twiddling-line
• twiddling-lines
• twiddlings
• twiddly
• twier
• twiers
• twifold
• twiforked
• twiformed
• twig
• twigged
• twiggen
• twigger
• twiggers
• twiggier
• twiggiest
• twigging
• twiggy