oak apple

1. 1.

   oak gall caused by larvae of a cynipid wasp

   Broadergall

Questions about oak apple

What does oak apple mean?

oak apple means "oak gall caused by larvae of a cynipid wasp".

Is oak apple a common word?

oak apple is banded "Uncommon" — turns up in careful writing rather than conversation. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.