A prostitute was a person hired for sex.
In Kish in 2700 BC, the temple prostitutes, such as En-Gula, were priestesses of Ishtar. (PROSE: Timewyrm: Genesys)
In August 79, Aglae was a prostitute in Pompeii. (AUDIO: The Fires of Vulcan)
In 1782 and 1783, Lisa-Beth Lachlan was a prostitute in London. She once slept with Fitz Kreiner for fun. (PROSE: The Adventuress of Henrietta Street)
Rebecca Macardle was a prostitute until 1789, at which time she became an agent of the British government. (PROSE: The Adventuress of Henrietta Street)
In Cardiff in 1812, the body of a prostitute named Mary was taken over by an Arcateenian, killing her in the process. (TV: Greeks Bearing Gifts)
In the 19th century, William Chesterton's father, the paternal great-great-grandfather of the First Doctor's companion Ian Chesterton, was a drunkard who habitually slept with prostitutes. (PROSE: The Eleventh Tiger)
A serial killer named Jack the Ripper brutally murdered prostitutes in London's East End in 1888. Most people agreed that only five murders were canon. (PROSE: Matrix; COMIC: Ripper's Curse)
In the early 21st century, American legislation meant that prostitutes operating in an area with a high incident of HIV7 could be arrested for attempted murder. (PROSE: Cat's Cradle: Warhead)
In 2011, Claire was a prostitute hired by Jilly Kitzinger for Oswald Danes. (TV: End of the Road)
In the 35th century, Cosmae fell in love with a prostitute named Kaquaan. (PROSE: The Menagerie)
In 5,000,000,000, Jabe wondered if Rose Tyler was the Ninth Doctor's prostitute. (TV: The End of the World)
Behind the scenes
According to a Digital Spy interview with Velile Tshabalala, Rosita, her role in The Next Doctor, was a prostitute before meeting Jackson Lake. This is hinted at in the episode when Rosita and the Tenth Doctor confront Miss Hartigan and she replies to her by saying, 'You can be quiet; I doubt he paid you to talk'.