The word 钟头 (zhōngtóu), meaning "hour", is formed through a vivid conceptual metaphor. It directly combines 钟 (zhōng), meaning "clock" or "bell" (the instrument that measures or announces time), with 头 (tóu), meaning "head" or "end". The term visualizes an hour as a single, complete segment or "head" unit on the face of a clock, picturing it as a distinct block of time marked off by the clock's mechanism.