trunnel
/ˈtrʌnəl/
noun
- A wooden peg used to fasten timbers together, especially in shipbuilding or timber framing.
- The shipwright drove a trunnel through the plank to secure it to the frame.
- Old barns were often held together with trunnels instead of nails.
- He carved a trunnel from a piece of oak to repair the wooden bridge.