To cover or surround with bushes. They decided to bush the perimeter of the garden to create a natural fence.
To force or drive into the bushes. The hunters bushed the game to flush it out into the open.
To fit or line with a bushing (mechanical sleeve) so as to reduce friction or play. The mechanic bushed the cylinder to restore the correct clearance.
(intransitive, often with out) To grow or spread into a bushy form. The hedge will bush out nicely by late summer if you prune it now.