A somewhat literary or formal term for a person who roams without a fixed home, often with a poetic or melancholic nuance.
In his youth, he was a wanderer traveling the world.
流浪者 emphasizes homelessness and drifting due to circumstances, often with a sense of hardship, whereas 漂泊者 can imply a more romantic or aimless wandering.
Compound of 漂泊 (hyōhaku, 'wandering, drifting') + 者 (sha, 'person'). The exact historical derivation is uncertain, but the kanji 漂 suggests floating or drifting, and 泊 suggests lodging or staying overnight, together evoking a life of aimless travel.