From The Collaborative International Dictionary of English v.0.48 :
Root \Root\ (r[=oo]t), v. i. [imp. & p. p. Rooted; p. pr. &
vb. n. Rooting.]
1. To fix the root; to enter the earth, as roots; to take
root and begin to grow.
[1913 Webster]
In deep grounds the weeds root deeper. --Mortimer.
[1913 Webster]
2. To be firmly fixed; to be established.
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If any irregularity chanced to intervene and to
cause misappehensions, he gave them not leave to
root and fasten by concealment. --Bp. Fell.
[1913 Webster]
From WordNet (r) 3.0 (2006) :
rooting
n 1: the process of putting forth roots and beginning to grow