For an easy fix I'd be tempted to just glue it in with some epoxy. The more correct method would be to fill the hole with glued-in dowel, then drill it out to the correct size (diameter of the insert not including the fins).
For an easy fix I'd be tempted to just glue it in with some epoxy. The more correct method would be to fill the hole with glued-in dowel, then drill it out to the correct size (diameter of the insert not including the fins).