"deprive of leaves, strip the leaves from," 1793, perhaps a back-formation from defoliation. Earlier in this sense was defoil (c. 1600), which was identical in form with a verb meaning "to trample underfoot." Related: Defoliated; defoliating.
defoliate the trees with pesticides
deflection
defloration
deflower
defogger
defoliant
defoliate
defoliation
deforest
deforestation
deform
deformation
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