What is "begirdled"

Usage examples of "begirdled".

On either side, to right and left the tree-girdle reached out toward the blue distance, thick close and unsundered, save where it and the plain which it begirdled was cleft amidmost by a river about as wide as the Thames at Sheene when the flood-tide is at its highest, but so swift and full of eddies, that it gave token of mountains not so far distant, though they were hidden.