Based on the search results, "turpin" can refer to different things depending on the context:

• A person or thing that shows the existence or direction of a trend.
• A nickname.
• A moderate or small amount.
• A holdup man who stops a vehicle and steals from it.
• An obsolete corruption of terrapin, which refers to a land tortoise.
• Dick Turpin, an English highwayman who lived in the 18th century.

Without additional context, it is difficult to determine which definition of "turpin" is being referred to.