上紧发条 shàngjǐnfātiáo to wind a spring Origin Definitions Defs Strokes Stroke Words Sentences Sents 上紧 上緊 shàngjǐn verb to tighten To tighten, fasten, or lock securely; to wind up a mechanical device like a clock or watch.发条 發條 fātiáo noun spring the clockwork spring of a mechanical device like a watch or windup toy, which provides power as it unwinds