We found 2 dictionaries that define the word grass frogs:

General (2 matching dictionaries)

1. grass frogs: Merriam-Webster
2. grass frogs: Vocabulary.com

(Note: See grass_frog as well.)

Definitions from Wiktionary (grass frog) ▸ noun:  Any of several Australian terrestrial tree frogs. ▸ Also see grass_frog ▸ Words similar to grass frogs ▸ Usage examples for grass frogs ▸ Idioms related to grass frogs ▸ Wikipedia articles (New!) ▸ Words that often appear near grass frogs ▸ Rhymes of grass frogs ▸ Invented words related to grass frogs