Dictionary.com
definitions
  • synonyms

horned oak gall

See more synonyms on Thesaurus.com
noun
  1. a small, round tumor, formed around wasp eggs laid in the branches of a pin oak tree, that disrupts the flow of nutrients to the tree, with consequent defoliation and death.
Also called oak gall.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018