The term 'Black Lamp' can be broken down into four words, each of which is represented by a crossword solution. The first word is 'unto, ' which is a preposition meaning 'up to' or 'TOWARDS.' The second word is 'LAVA, ' which is molten rock that is expelled from a volcano. The third word is 'OIL, ' which is a type of liquid hydrocarbon that is used for fuel and lubrication. The fourth word is 'ARC, ' which is an electrical current that jumps between two points. Together, these four words form the term 'Black Lamp, ' which is a type of lamp that uses OIL and an ARC of electricity to create light.