{i} unskilled laborer, person who earns a living through manual labor and/or odd jobs; longshoreman; deckhand; circus worker who assembles and disassemble tents and takes care of the animals and equipment
A roustabout is a unskilled worker, especially one who works in a port or at an oil well. a man who does work for which he needs to be strong but not skilled, especially in a port, an oilfield, or a circus
A laborer, especially a deck hand, on a river steamboat, who moves the cargo, loads and unloads wood, and the like; in an opprobrious sense, a shiftless vagrant who lives by chance jobs