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An aglet or aiglet is the little plastic or metal cladding on the end of shoelaces that keeps the twine from unraveling. The word comes from the latin word acus which means needle. In times past, aglets were usually made of metal though some were glass or stone. Many were highly ornamental, and made of precious metals such as silver. Before the invention of buttons, they were used on the ends of ribbons to fasten clothing together. Sometimes they would be formed into small figures. Shakespeare calls this type of figure an "aglet baby" in The Taming of the Shrew. Purely decorative metal ornaments called aigullette are sometimes features of modern military dress uniforms.

In biology structures called telomeres form a cap on the end of chromosomes which prevents them from fusing together. Just as shoelaces can fray if the aglet becomes damaged so too can problems occur with the chromosome if the telomeres become damaged. People with only short telomeres appear to suffer an increased risk of smoking-related cancers. [1] Telomeres have been observed to deteriorate as people age, and have therefore been theoretically linked to ageingAgeing is the process of getting older. In American English, the word is aging''. This article covers the social, cultural, and economic effects of ageing. For the biology of ageing see Senescence. Ageing is an important part of all human societies reflec. Whether ageing causes telomeres to unravel, or unraveling causes people to age, has not been determined.