Previous Term Next Term Cluster Cluster refers to a wood figure that is similar to a burl wood figure but is always grouped together in smaller areas, or clusters. Surrounding the clusters are darker figurings that have a muscle-like appearance. Related Terms Fumed Wood Shirred Drapery Header Accordion Pleat Pencil Pleat Photochromic Flat Pleat Materials WallcoveringFlooringWood Was this insightful? Yes No