The crossword solutions for the term LIGHT LIGHTER are NEON, a four-letter word. NEON is a chemical element with the symbol Ne and atomic number 10. It is a noble gas that is found in trace amounts in the atmosphere and is used in a variety of applications, including lighting, signs, and lasers. NEON is also used in television tubes, high-voltage indicators, lightning arresters, wave meter tubes, and helium–NEON lasers.