cankerworm

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English[edit]

English Wikipedia has an article on:
Wikipedia

Etymology[edit]

From canker +‎ worm.

Noun[edit]

cankerworm (plural cankerworms)

  1. Either of two caterpillars, the larvae of geometrid moths, that are destructive to fruit, buds and leaves.
  2. (figurative) A corrupting or destructive force.