aiglet

noun

1. A tip, originally of metal and often decorative, on a ribbon or cord that makes lacing two parts of a garment or garments together easier, as in corset lacings, "points" (lacing hose or trousers to jacket or doublet) or sleeves to a bodice.“Buckles and agglettes at vnwares, ſhall race his bowe, a thinge both euill for the fight, & perillous for freatinge.”
2. An ornament worn on clothing, consisting of a metal tag on a fringe, or a small metallic plate or spangle.“a silken Camus […] Which all aboue besprinckled was throughout, / With golden aygulets, that glistred bright”