We found one dictionary that defines the word illuminating grenade:

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1. illuminating grenade: Encyclopedia

▸ Words similar to illuminating grenade ▸ Usage examples for illuminating grenade ▸ Idioms related to illuminating grenade ▸ Wikipedia articles (New!) ▸ Words that often appear near illuminating grenade ▸ Rhymes of illuminating grenade ▸ Invented words related to illuminating grenade