badigeon
/bəˈdɪdʒ(ɪ)n/ /badiːˈʒɒ̃n/Now rare
noun
A preparation of powdered freestone, sawdust, or the like combined with a binding medium, used to cover defects and repair holes in stone, woodwork, etc.
Origin
Mid 18th century; earliest use found in Chambers's Cyclopaedia. From French badigeon, of unknown origin.