Prune
Pruning is the process of cutting back a
tree or
shrub. Done carefully, pruning can increase the yield of
fruit; it is thus a common
agricultural practice. Foresters and orcharders also prune broken branches, replacing an uneven break--which can be a source of infection and an opening to insect infestation--with smooth cuts, sometimes painted over with tar or other protective substances.
Trees growing near highways or power lines are pruned for safety reasons, and gardeners sometimes prune trees to achieve a desired appearance.
See also
A prune is another word for a dried plum.