noun, noun which may take the genitive case particle 'no'
loafer; freeloader; tramp; unemployed person
A somewhat dated term for a person who is homeless, jobless, or lives by begging or casual labor. Often carries a nuance of social marginalization. In modern Japanese, ホームレス is more common for 'homeless person'.
from German Lumpen
戦後の混乱期には、街に多くのルンペンがあふれていた。
In the chaotic postwar period, the streets were full of tramps.
彼はルンペン生活を送りながら旅を続けた。
He continued his journey while living as a tramp.