In Patrick O'Brian's "Post Captain," a discussion arises centered around the term "watches" as it relates to timekeeping. The conversation points to the curious nature of how these short periods are referred to as watches, leading to a reflection on why such terminology is used. The characters ponder the origins and implications of the name.

Stephen provides an insight, suggesting that the term "watches" comes from the notion of being curtailed or shortened. This explanation highlights how language evolves and how the meanings of words can become deeply embedded in their usage, reflecting a blend of practicality and humor in naval life.