a plant growing on another plant; a parasitic plant or epiphyte.

A thing which grows over or on top of something else, a superficial growth; a living organism which grows on another, a parasite or epiphyte. Also…

A plant which grows without soil; esp. one growing in a tree or other elevated place, using its roots primarily as a source of attachment and…

Botany. A plant which grows on another plant; usually restricted to those which derive only support (and not nutrition) from the plants on which they…

spec. in Botany, an epiphytic plant which eventually sends its roots to the ground and smothers its host.