Defn: To grow to an inferior, or less than the usual, size or height.
Wyclif.

UNDERGROW
Un`der*grow", a.

Defn: Undergrown. [Obs.] Chaucer.

UNDERGROWN
Un`der*grown", a.

Defn: Of small stature; not grown to a full height or size.

UNDERGROWTH
Un"der*growth`, n.

Defn: That which grows under trees; specifically, shrubs or small trees growing among large trees. Milton.

UNDERGRUB
Un`der*grub", v. t.

Defn: To undermine. [Prov. Eng.] Halliwell.

UNDERHAND
Un"der*hand`, a.