The phrase refers to a device designed to melt scented wax without the use of an open flame. Typically, it features a metallic finish, often emulating a precious metal, and incorporates a light source to provide both heat and illumination. These devices are commonly used in homes and offices to disperse fragrance into the surrounding environment.
Such devices offer several advantages, including enhanced safety by eliminating the risk of fire associated with traditional candles. The gentle heat they generate can also preserve the scent of the wax for a longer duration compared to burning. Historically, alternatives to open-flame fragrance delivery have been sought to minimize fire hazards and control scent diffusion, leading to the development of electric wax melters.