We found 3 dictionaries that define the word gall gnats:

General (3 matching dictionaries)

1. gall gnats: Merriam-Webster
2. gall gnats: Collins English Dictionary
3. gall gnats: Wiktionary

(Note: See gall_gnat as well.)

Definitions from Wiktionary (gall gnat) ▸ noun:  gall midge ▸ Also see gall_gnat ▸ Words similar to gall gnats ▸ Usage examples for gall gnats ▸ Idioms related to gall gnats ▸ Wikipedia articles (New!) ▸ Words that often appear near gall gnats ▸ Rhymes of gall gnats ▸ Invented words related to gall gnats