noun A placeholder name for an unnamed, unspecified, or hypothetical manufactured good or product, typically as an example for purposes of explaining concepts.
Suppose we have a widget factory that produces 100 units per year...
noun A floating device inside a beer can, meant to create foam when opened.
noun A small scraping tool consisting of a blade and a handle, commonly used to remove paint from glass and other smooth surfaces.
noun Synonym of tool, implement, device, gadget, part.
noun Any one of the components of a computer application's graphical user interface, such as a Cancel button or text input box that a user interacts with.
noun A small applet that can be placed on the desktop or in a sidebar, etc.
This weather widget shows the current temperature.