1. <electronics> push-button.
2. <operating system> A graphical representation of an electrical push-button appearing as part of a graphical user interface. Moving the mouse pointer over the graphical button and pressing one of the physical mouse buttons starts some software action such as closing a window or deleting a file.
See also radio button.
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Nearby terms: busy-wait « Butterfly Common LISP « Butterfly Scheme « button » buzz » bv » bw