n A (w|placeholder name) for an unnamed, unspecified, or hypothetical manufactured good or product.
n Portable code that can be easily installed and executed by an end user.
n A floating widget or other device inside a beer can, meant to create foam when opened
n A small scraping tool consisting of a blade and a handle, commonly used to remove paint from glass and other smooth surfaces
n (computing|graphical user interface) 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.