Word Helper: An Associative Language Search Engine

What Google Knows

Oak apple or oak gall is the common name for a large, round, vaguely apple-like gall commonly found on many species of oak. Oak apples range in size from 2 to 4 centimetres in diameter and are caused by chemicals injected by the larva of certain kinds of gall wasp in the family Cynipidae.

Related Definition

  1. oak apple:

    n oak gall caused by larvae of a cynipid wasp