In the lighting industry, the term “Can” refers to a type of light fixture that is commonly known as a recessed light or downlight. These fixtures are designed to be installed in an opening in the ceiling, providing a sleek and seamless appearance. The nickname “Can” comes from the cylindrical, metal housing that resembles a can, into which the light bulb is inserted. This housing is concealed within the ceiling, creating a clean and unobtrusive look.