下班。

The Chinese word '下班' (xiàbān) is a phrasal verb meaning 'to get off work' or 'to finish one's daily work'. It is composed of two characters: 1. **下 (xià):** This character primarily means 'down', 'below', 'under', 'next', or 'to descend'. In this context, it takes on the meaning of 'to leave' or 'to cease' an activity or location. 2. **班 (bān):** This character has several meanings, including 'class', 'team', 'shift', 'duty', or 'work schedule'. In '下班', it specifically refers to a 'shift of work' or 'one's duty time'. Therefore, literally, '下班' can be understood as 'to leave one's work shift' or 'to finish one's duty'. The term is quite straightforward in its construction, combining common characters to express a ubiquitous daily activity. Its origin is tied to the modern concept of scheduled work hours and shifts, which became prevalent with industrialization and organized labor. While the individual characters have ancient origins, their combination to specifically mean 'to get off work' likely became common usage in the modern era, particularly within the last century or two, as structured employment became the norm in China.