Webster’s Revised Unabridged Dictionary · 1913
Proletarian
Prol′e·ta′ri·an (·rĭ·an), a. [L. proletarius. See Proletary.] Of or pertaining to the proletaries; belonging to the commonalty; hence, mean; vile; vulgar. "Every citizen, if he were not a proletarian animal kept at the public cost." De Quincey. — n. A proletary.