defoliator

Pronunciation:  US [dɪˈfəʊlɪeɪtə] UK 
  • n."Farming" leaf removal agents; "The worm" leaf-eating insects
  • WebLeaf-eating pests; Leaf removal device; Agent Orange
n.
1.
[Agriculture] sth. that used to strip of leaves 
2.
[Insect] an insect that strip of leaves