We found 2 dictionaries that define the word giant hornets:

General (2 matching dictionaries)

1. giant hornets: Merriam-Webster
2. giant hornets: Vocabulary.com

(Note: See giant_hornet as well.)

Definitions from WordNet (giant hornet) ▸ noun:  European hornet introduced into the United States ▸ Also see giant_hornet ▸ Words similar to giant hornets ▸ Usage examples for giant hornets ▸ Idioms related to giant hornets ▸ Wikipedia articles (New!) ▸ Words that often appear near giant hornets ▸ Rhymes of giant hornets ▸ Invented words related to giant hornets