1) Beam 2) Beam of light 3) Bit of light at midnight 4) Bit of night light 5) Gleaming ray 6) Irradiation 7) Light beam 8) Lunar ray 9) McSwine of Dogpatch 10) Midnight light unit 11) Moon ray 12) Moon-ray 13) Night light 14) Night ray 15) Pearl blue 16) Ray from the night sky 17) Ray of light 18) Ray of light at night Found on https://www.crosswordclues.com/clue/moonbeam