Flâneur
From Tardis Wiki, the free Doctor Who reference
"Flâneur", or "flâneuse", was a descriptive noun which Iris Wildthyme used to describe herself. (PROSE: Iris Wildthyme and the Unholy Ghost)
Behind the scenes
Flâneur (masculine)/flâneuse (feminine) means "stroller", "lounger", "saunterer" or "loafer" in French. Flânerie is the act of strolling, with all of its accompanying associations. Flâneur originally derives from the Old Norse verb flana, which means "to wander with no purpose".