The term "galley slave" refers to a person who is forced to serve as an oarsman on a galley ship. It is often used as a metaphor to describe someone who is working tirelessly or laboring under difficult conditions. Synonyms for this term include convict laborer, prisoner, drudge, toiler, serf, bondman, and captive. Some other related terms could be indentured servants, forced laborers, or prisoners of war, all of which imply that the person is being compelled to work against their will. Despite the negative connotations of these terms, many individuals throughout history have been forced into such circumstances due to economic, political, or legal restrictions.