A veneer is a relatively thin facing layer applied over a supporting material. Wood veneer and masonry veneer are different assemblies that share this general concept.
What this means at your property
A damaged surface may appear solid while the backing, adhesive or attachment is affected. Refinishing options and replacement decisions depend on how the facing is constructed and how much material is available.
What should be identified before repair?
Ask whether the item is solid material or a veneer assembly and document the backing and attachment where accessible. The proposed method should account for the facing thickness and underlying damage, not just the visible color or grain.