1. To grow over; to cover with growth or herbage, esp. that which is rank. The green . . . is rough and overgrown. Sir W. Scott. 2. To grow beyond; to rise above; hence, to overcome; to oppress. [Obs.] Mortimer. "O'ergrown with labor." Beau. & Fl. [Usually in the past participle.]
To grow beyond the fit or natural size; as, a huge, overgrown ox. L'Estrange....