What is "badigeon"

Badigeon \Ba*di"geon\ (b[.a]*d[i^]j"[u^]n), n. [F.] A cement or distemper paste (as of plaster and powdered freestone, or of sawdust and glue or lime) used by sculptors, builders, and workers in wood or stone, to fill holes, cover defects, finish a surface, etc. [Webster 1913 Suppl.] ||