Noun: rootstock 'root,stók
- A horizontal plant stem with shoots above and roots below serving as a reproductive structure
"Ginger is a common edible rootstock";
- rhizome, rootstalk
- Root or part of a root used for plant propagation; especially that part of a grafted plant that supplies the roots
"They chose a hardy rootstock to ensure the grafted rose would survive the winter"
Derived forms: rootstocks
Encyclopedia: Rootstock