\Prun"er\, n.
1. One who prunes, or removes, what is superfluous.
2. (Zo["o]l.) Any one of several species of beetles whose
   larv[ae] gnaw the branches of trees so as to cause them to
   fall, especially the American oak pruner ({Asemum
   m[oe]stum}), whose larva eats the pith of oak branches,
   and when mature gnaws a circular furrow on the inside
   nearly to the bark. When the branches fall each contains a
   pupa.