What is "roothold"

Usage examples of "roothold".

Willow and witch alder, stunted birch and poplar had found roothold, clothed it, until only their crowding outposts, thrusting forward in a wavering se m icircle, held back seemingly by the blue hordes, showed where it m elted into the meadows.

Willow and witch alder, stunted birch and poplar had found roothold, clothed it, until only their crowding outposts, thrusting forward in a wavering semicircle, held back seemingly by the blue hordes, showed where it melted into the meadows.