链条 (liàn tiáo) is a compound noun meaning 'chain'—a series of connected metal rings or links, typically used for pulling, restraining, or transmitting motion. The first character 链 (liàn) means 'link' or 'chain link', emphasizing the interconnected, interlocking nature of the object; the second character 条 (tiáo) is a common measure word for long, thin, flexible objects—here it functions as a nominal suffix that turns the concept into a countable physical item. Together, they form a concrete, tangible noun referring specifically to mechanical or functional chains, not metaphorical ones (e.g., supply chain is 供应链, not 链条).

This word appears frequently in contexts involving bicycles, motorcycles, industrial machinery, pet restraints, and security devices. It implies strength, continuity, and physical constraint or connection. Unlike abstract uses of 'chain' in English, 链条 almost always denotes a visible, material object made of metal—often heavy, durable, and requiring maintenance like lubrication.