light

noun
  1. The natural agent that stimulates sight and makes things visible. noun
    The room was filled with bright light from the window.
    Plants need light to perform photosynthesis.
  2. A source of illumination, especially an electric lamp. noun
    She turned on the light to read her book.
    The street lights came on as it got dark.
  3. Having little weight; not heavy. adjective
    The suitcase was surprisingly light.
    He carried a light backpack for the hike.
  4. Not dark; pale or whitish in color. adjective
    She wore a light blue dress to the party.
    The walls were painted a light shade of yellow.
  5. To ignite or cause to burn. verb
    He used a match to light the candle.
    She lit the fireplace to warm the room.
  6. To make something start to burn. verb
    He lit the barbecue with a match.
    She lit the fireworks to celebrate the holiday.
  7. To become illuminated. verb
    The room lit up when she turned on the lamp.
    The sky lit up with fireworks.
  8. Free from worry or trouble; cheerful. adjective
    He had a light heart after hearing the good news.
    Her light mood was infectious.