(botany) Any adventitious root that grows from a plant stem above ground.

A disease, caused by a nematode, that causes swelling of the roots of oats

plural of root beer

A species of vole, Microtus oeconomus.

plural of root vole

Alternative spelling of grassroots

(idiomatic) An initiating cause of a chain of events which leads to an outcome or effect of interest.

(transitive) The action of identifying the cause of a chain of events which leads to an outcome or effect of interest. To root cause something's root cause does not necessarily imply the use of root cause analysis (RCA).

Of a plant, that has become too large and heavy to support itself, and has fallen over, so uprooting itself.

To remove or abolish completely. / To search for and discover.