Glijder
Glijder is a Dutch noun formed from the verb glijden (to slide) with the agent suffix -er. In standard Dutch, it most commonly refers to the slider of a zipper (rits). The glijder is the movable component that travels along the teeth of a zipper to open or close the garment, bag, or other item. The term is widely used in sewing, clothing repair, and textile manufacturing. When a zipper jams or breaks, replacing or repairing the glijder is a common maintenance task.
Beyond zippers, glijder can denote any part designed to slide within a guide or along a rail
Etymology and usage: The word is formed from glijden 'to slide' plus the agent suffix -er, yielding
Related terms include rits, ritssluiting (zipper closure), and slider, which is the English loanword sometimes used