The Chinese word **刺刀** (cìdāo), meaning "bayonet," is a compound noun formed through semantic combination: the first character **刺** (cì) means "to stab" or "to pierce," and the second character **刀** (dāo) means "knife" or "blade." Together, they create a literal meaning of "stabbing knife," which directly describes the weapon's primary function—a blade attached to a rifle for close-quarters combat. This formation follows the common Chinese word-construction pattern where an action or characteristic (刺) modifies a general object (刀) to specify its purpose, resulting in a precise and logical term.