The word "一连串" is formed as a compound by combining three distinct characters to create a metaphorical meaning: "一" (yī) means "one," "连" (lián) means "to link or connect," and "串" (chuàn) originally means "a string" (like beads on a string) or "to string together." When combined, the term paints a vivid picture of a single, unbroken chain or sequence, where individual events or items are linked seamlessly one after another, much like beads on a single string. Thus, it figuratively means "a series of," "a succession of," or "a string of" events, emphasizing continuity and uninterrupted connection.