The Chinese word **锯齿** (jùchǐ), meaning "sawtooth," is a classic example of a **modifier-head compound word**, where the first character **锯** (jù, "saw") modifies and specifies the second character **齿** (chǐ, "tooth"). Literally, it translates to "saw's tooth," but it functions as a single noun to describe the **serrated, tooth-like edge** of a saw or any similarly notched shape. This formation is highly logical and visual, directly representing the object's defining feature through the metaphorical combination of two concrete nouns, a common and intuitive method of word creation in Chinese.