noun
tray landscape stone; bonsai landscape stone
A stone used as the foundation or central element in a tray landscape (盆石), a traditional Japanese art similar to bonsai or miniature rock gardens. The term is domain-specific and not commonly encountered outside of traditional arts contexts.
盆石の上に小さな砂利を敷いて、山水を表現する。
Small gravel is laid on the tray landscape stone to represent mountains and water.