Definitions for "BROWN DWARF"
An object in space, intermediate in mass between a small star and a large planet. Brown dwarfs are very difficult to detect because they are very faint; as they age and cool they become even fainter. The radiation they emit is primarily in the near infrared. For more information see The discovery of brown dwarfs (April 2000, Scientific American)
An object too small to be an ordinary star because it cannot produce enough energy by fusion in its core to compensate for the radiative energy it loses from its surface. A brown dwarf has a mass less than 0.08 times that of the Sun.
A star which does not have enough mass to ignite thermonuclear fusion in the core.
Keywords:  possibility, likely
a likely possibility