We found one dictionary that defines the word grenade throwers:

General (1 matching dictionary)

1. grenade throwers: Vocabulary.com

(Note: See grenade_thrower as well.)

Definitions from WordNet (grenade thrower) ▸ noun:  an infantryman equipped with grenades ▸ Also see grenade_thrower ▸ Words similar to grenade throwers ▸ Usage examples for grenade throwers ▸ Idioms related to grenade throwers ▸ Wikipedia articles (New!) ▸ Words that often appear near grenade throwers ▸ Rhymes of grenade throwers ▸ Invented words related to grenade throwers