We found 2 dictionaries that define the word machine rifles:

General (2 matching dictionaries)

1. machine rifles: Merriam-Webster
2. machine rifles: Vocabulary.com

(Note: See machine_rifle as well.)

Definitions from WordNet (machine rifle) ▸ noun:  light machine gun ▸ Also see machine_rifle ▸ Words similar to machine rifles ▸ Usage examples for machine rifles ▸ Idioms related to machine rifles ▸ Wikipedia articles (New!) ▸ Words that often appear near machine rifles ▸ Rhymes of machine rifles ▸ Invented words related to machine rifles