‘一束’ (yī shù) is a measure word phrase meaning ‘a bundle’ or ‘a bouquet’, used primarily for long, slender, or flexible items that can be tied together — most commonly flowers, but also items like wheat stalks, light rays, or even abstract concepts like thoughts. The first character 一 (yī) means ‘one’, and 束 (shù) originally depicted bound sticks and functions as a classifier meaning ‘a bundle tied together’. Together, they form a fixed quantifier structure that must precede the noun it measures.

This phrase emphasizes cohesion and visual unity — it implies the items are gathered intentionally, not just randomly grouped. It’s neutral in register and widely used in both spoken and written Chinese. While 束 can stand alone as a measure word (e.g., 三束花), 一束 is by far the most frequent collocation, especially in gift-giving, poetry, and descriptive writing. It carries a gentle, aesthetic connotation, often evoking care, beauty, or thoughtfulness.