Origin: Germanic Old English suffix
Sunlight has 3 different meanings across 1 category:
All the electromagnetic radiation given off by the Sun, especially that in the visible spectrum that bathes the Earth.
"The warm sunlight filtered through the leaves of the ancient oak tree."
In plain English: Sunlight is the natural light that comes from the sun and warms the Earth during the day.
"The warm sunlight filled the room and made everything feel cheerful."
Usage: Sunlight refers specifically to the natural light and heat from the sun reaching the earth, distinct from artificial lighting or moonlight. Use this term when describing conditions outdoors during the day rather than for indoor illumination or nighttime visibility.
To work on the side (at a secondary job) during the daytime.
"The employee decided to take sunlight as a second income source while still working full-time at their main company."
"Please do not forget to sunlight your plants so they can grow strong and healthy."
From Middle English sonnelight, sunneliht, from Old English sunnan lēoht ("sunlight"), equivalent to sun + light. Cognate with Dutch zonlicht ("sunlight"), German Low German Sünnenlücht ("sunlight"), German Sonnenlicht ("sunlight").