noun. a narrow, elongated depression, groove, notch, slit, or aperture, especially a narrow opening for receiving or admitting something, as a coin or a letter. a place or position, as in a sequence or series: The program received a new time slot on the broadcasting schedule.

: an originally coin-operated gambling machine that pays off according to the matching of symbols on wheels spun by a handle. also : an electronic version of this machine.

The slot property of the Element interface returns the name of the shadow DOM slot the element is inserted in. A slot is a placeholder inside a web component that users can fill with their own markup (see Using templates and slots for more information).

A Scoped slot provides local data from the component so that the parent can choose how to render it.